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<DIV><FONT size=2 face=Arial>By off-grid inverters do you happen to
mean square wave and/or modified sine wave inverters? If so,
I have been struggling with a similar issue. I have tried to get
both/either Cutler-Hammer AFCI and GFCI devices to work with a Magnum
MM1212 AE (modified sine wave) with no luck. All GFCI and AFCI are
thoroughly tested against pure sine wave sources by the manufacturer but they
generally do not test against the modified sine waveform. The Magnum
installation guide lists only three specific GFCI devices that their tests
show work with this inverter (Cutler-Hammer is not among them so I'll have
to change out my box to accept the specific Leviton or Hubbell device that
passed). Schneider/Xantrex also has a document that shows many GFCIs fail to
work properly with Xantrex modified sine wave inverters--and a few of them
do. </FONT><FONT size=2 face=Arial><A
href="http://www.xantrex.com/web/id/1193/DocServe.aspx">http://www.xantrex.com/web/id/1193/DocServe.aspx</A>
Looks like it may also be true that a specific GFCI device may
work with one model or manufacturer but not another. I'm not an electronics
expert but I imagine the AFCI devices are just as problematic since they are
probably all built to pure sine wave specs.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>If you were strictly talking about pure sine wave
battery based inverters, sorry -- I didn't mean to hijack the topic (but
I'd still appreciate any insights)!</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Charlie Pickard<BR>Aladdin Solar<BR></FONT><FONT
size=2 face=Arial></FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=tump@hughes.net href="mailto:tump@hughes.net">tump@hughes.net</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 31, 2010 6:32 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] Arc fault
questions.</DIV>
<DIV><BR></DIV>Can & will someone explain, why off grid inverters will
cause nuisance tripping of the AF receptacle. <BR>Does anyone have "real"
field information as to how this might be reduced or eliminated? How
about which AF receptacles are less likely to trip? <BR>TIA tump<BR>Sent
via BlackBerry by
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