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Old 06-09-2010, 03:38 PM   #1
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longest run


from farthest downstream outlet
to load center
for a residence?

Would this be using #12 or #14?

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Old 06-09-2010, 03:43 PM   #2
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longest run


What exactly are you asking ?
You could make a longer run with #10 if you wanted to
Or an even higher gauge

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Old 06-09-2010, 06:06 PM   #3
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longest run


Quote:
Originally Posted by Scuba_Dave View Post
What exactly are you asking ?
You could make a longer run with #10 if you wanted to
Or an even higher gauge
Using copper or aluminum, #12 or #14, how long can the Romex be from the load center to the farthest outlet?
If I'm allowed a 3% drop at 120v, at what max current would this be?

Last edited by Yoyizit; 06-09-2010 at 06:17 PM.
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Old 06-09-2010, 06:17 PM   #4
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longest run


Voltage drop calculator
It would be different for each gauge
And would depend upon the load at the last outlet
Around 65' for 12-2 w/15a load at the last outlet

Voltage drop Calculator:
http://www.csgnetwork.com/voltagedropcalc.html
.
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Old 06-10-2010, 03:29 AM   #5
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longest run


Yoyizit.,

Typically for longest run with 4.0mm˛ with 15 amp load @ 120 volts will be about 25 meters depending how steep the voltage drop you want to be set at normally I set at 3% the most but some load which it is not circital it can able toralce up to 5% but no more than that.

Merci,Marc
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Old 06-10-2010, 06:28 AM   #6
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longest run


I'm pretty sure there are loads that can handle more than 5% voltage drop without a noticable effect. for example, a quality computer PSU can handle input voltages down to about 90volts. The pool pump I am replaceing is dealing with about 7% based on the above calculator. I've also run several power tools on extention cords chained together pretty far away from an outlet (some chained out beyond the 7% outlet mentioned above). I bet incandecent light can drop quite a bit too before you notice a big difference.

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