<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Interesting, there isn't a code requirement to color code for phase rotation, but it is common practice for black, red, blue to correspond to clockwise rotation. Also notice on the DC table, that John Wiles recommends (but isn't NEC required) color coding for a positive grounded system: <div>white for positive, <span class="Apple-tab-span" style="white-space:pre"> </span>black for negative.<div>I think the phase rotation and DC polarity issues are analogous: get the colors backwards, and the motor turns backwards, AC or DC. (and if we're lucky, that's all that goes wrong)</div><div>If we're unlucky, at least on DC, the inverter belches smoke and fire.</div><div><div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>R. Walters</div><div><a href="mailto:ray@solarray.com">ray@solarray.com</a></div><div>Solar Engineer</div><div><br class="khtml-block-placeholder"></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span>
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<br><div><div>On Aug 21, 2010, at 4:44 PM, Marco Mangelsdorf wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div lang="EN-US" link="blue" vlink="purple"><div class="Section1" style="page: Section1; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">But I’m still trying to determine if the black-red-blue and brown-orange-yellow sequences are appropriate for clockwise or counter-clockwise phase rotations.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">marco<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.25in; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">US, AC:</span></b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">The US National Electrical Code only mandates white (or grey) for the neutral power conductor and bare copper, green, or green with yellow stripe for the protective ground. In principle any other<span class="Apple-converted-space"> </span></span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">colors</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><span class="Apple-converted-space"> </span>except these may be used for the power conductors. Black, red, and blue are used for 208 VAC three-</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">phase</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">; brown, orange and yellow are used for 480 VAC. Conductors larger than #6 AWG are only available in black and are color taped at the ends.<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.25in; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><a name="wire3.tbl"><i><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">US AC power circuit wiring color codes.</span></i></a><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div><table class="MsoNormalTable" border="1" cellpadding="0" style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(224, 255, 255); background-position: initial initial; background-repeat: initial initial; "><tbody><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Function<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">label<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Color, common<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Color, alternative<o:p></o:p></span></b></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Protective ground<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">PG<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">bare, green, or green-yellow<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">green<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Neutral<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">N<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">white<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">grey<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Line, single<span class="Apple-converted-space"> </span></span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">phase</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">black or red (2nd hot)<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Line, 3-</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">phase</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L1<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">black<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">brown<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Line, 3-</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">phase</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L2<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">red<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">orange<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Line, 3-</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">phase</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L3<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">blue<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">yellow<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "></td></tr></tbody></table><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.25in; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><a href="http://upload.wikimedia.org/wikipedia/commons/c/cc/3_phase_AC_waveform.svg" style="color: blue; text-decoration: underline; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); text-decoration: none; "><span><image001.png></span></span></b></a><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></b></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.25in; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">US DC power:</span></b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><span class="Apple-converted-space"> </span>The US National Electrical Code (for both AC and DC) mandates that the grounded neutral conductor of a power system be white or grey. The protective ground must be bare, green or green-yellow striped. Hot (active) wires may be any other<span class="Apple-converted-space"> </span></span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">colors</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><span class="Apple-converted-space"> </span>except these. However, common practice (per local electrical inspectors) is for the first hot (live or active) wire to be black and the second hot to be red. The recommendations in Table<span class="Apple-converted-space"> </span><a href="http://www.allaboutcircuits.com/vol_5/chpt_2/2.html#wire5.tbl" style="color: blue; text-decoration: underline; "><span style="color: rgb(32, 106, 232); ">below</span></a><span class="Apple-converted-space"> </span>are by Wiles.<span class="Apple-converted-space"> </span><a href="http://www.allaboutcircuits.com/vol_5/chpt_2/2.html#JWi.bibitem" style="color: blue; text-decoration: underline; "><span style="color: rgb(32, 106, 232); ">[JWi]</span></a><span class="Apple-converted-space"> </span>He makes no recommendation for ungrounded power system<span class="Apple-converted-space"> </span></span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">colors</span><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">. Usage of the ungrounded system is discouraged for safety. However, red (+) and black (-) follows the coloring of the grounded systems in the table.<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.25in; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><a name="wire5.tbl"><i><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">US recommended DC power circuit wiring color codes.</span></i></a><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "><o:p></o:p></span></div><table class="MsoNormalTable" border="1" cellpadding="0" style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(224, 255, 255); background-position: initial initial; background-repeat: initial initial; "><tbody><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Function<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">label<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Color<o:p></o:p></span></b></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Protective ground<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">PG<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">bare, green, or green-yellow<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> 2-wire ungrounded DC Power System<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Positive<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L+<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">no recommendation (red)<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Negative<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L-<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">no recommendation (black)<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> 2-wire grounded DC Power System<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Positive (of a negative grounded) circuit<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L+<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">red<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Negative (of a negative grounded) circuit<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">N<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">white<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Positive (of a positive grounded) circuit<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">N<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">white<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Negative (of a positive grounded) circuit<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L-<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">black<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> 3-wire grounded DC Power System<o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><b><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); "> <o:p></o:p></span></b></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Positive<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L+<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">red<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Mid-wire (center tap)<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">N<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">white<o:p></o:p></span></div></td></tr><tr><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">Negative<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">L-<o:p></o:p></span></div></td><td style="padding-top: 0.75pt; padding-right: 0.75pt; padding-bottom: 0.75pt; padding-left: 0.75pt; "><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="font-size: 9.5pt; font-family: Verdana, sans-serif; color: rgb(51, 51, 51); ">black<o:p></o:p></span></div></td></tr></tbody></table><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address:<span class="Apple-converted-space"> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color: blue; text-decoration: underline; ">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color: blue; text-decoration: underline; ">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive:<span class="Apple-converted-space"> </span><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" style="color: blue; text-decoration: underline; ">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color: blue; text-decoration: underline; ">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org/" style="color: blue; 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