<p dir="ltr">Here here always include surge and voltage drop.</p>
<div class="gmail_quote">On Jan 2, 2015 12:10 PM, "Larry" <<a href="mailto:larry@starlightsolar.com">larry@starlightsolar.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Jay,<br>
<br>
Divide inverter capacity by LVD then divide by full load efficiency. Example: 4000 Watt inverter shuts down at 42 volts, efficiency 85% = 4000/42 = 95A/.85 = 111 Amps. Then it depends on the insulation and conductor type and the corrections for ambient temp.<br>
<br>
How can you not consider voltage drop? This is important for the surge capability of inverters. If the battery-inverter run is long you could have significant voltage drop for a wire correctly rated for ampacity.<br>
<br>
Larry Crutcher<br>
Starlight Solar Power Systems<br>
<br>
On 1/1/15 7:23 PM, jay peltz wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Happy new year all.<br>
<br>
I have a question on wire sizing for the following.<br>
<br>
250 amp breaker, in a UL enclosure ( say midnite or outback etc)<br>
conduit from battery box to enclosure<br>
<br>
I'm wondering how folks size this for ampacity not voltage drop.<br>
<br>
thanks<br>
<br>
jay<br>
<br>
peltz power<br>
<br>
<br>
<br>
<br>
<br>
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