<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">HI Drake and all,<div class=""><br class=""></div><div class="">Thanks for this.</div><div class=""><br class=""></div><div class="">As I understand this better now, maybe. Neutral sizing changes between supply side and load side of main service panel.</div><div class=""><br class=""></div><div class="">Others have chimed in with an argument that can be made that if the neutral wire is sized for a 200 amp service then it should be OK even if the ungrounded wires are larger. Yes there would be higher VD than with the 500mcm but this would only be at fully 1 phase loaded which is highly unlikely. However the wire ampacity wouldn\u2019t be in question even in a 100% 1 phase load.</div><div class=""><br class=""></div><div class="">This project the owner decided that rather than fight the county, he had the money to install the 500mcm as a neutral.</div><div class=""><br class=""></div><div class="">I have been just trying to educate myself for future projects and as often is the case with me and the NEC, its more complicated that I thought. </div><div class=""><br class=""></div><div class="">jay</div><div class="">peltz power</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 23, 2018, at 10:26 AM, Drake <<a href="mailto:drake.chamberlin@redwoodalliance.org" class="">drake.chamberlin@redwoodalliance.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<span id="cid:7.1.0.9.0.20180923132057.070b4d58@redwoodalliance.org.0"><38555f75.jpg></span>
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At 09:47 PM 9/21/2018, you wrote:<br class="">
<blockquote type="cite" class="cite" cite="">Hi all, I’m wondering if there
is code reference to size of neutral vs power conductors. County is
requiring neutral same size as mains 240vac. As it’s 500 mcm due to VD
(200 amp service) it’s a non trivial expense. I know that where I live,
the utility brings in a smaller neutral than L1/L2 Thanks in advance Jay
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