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6 answers

If you're putting in a 200 amp service, probably #4, a 100 amp service, #6.

2007-11-20 10:02:43 · answer #1 · answered by Corky R 7 · 0 1

To size the wire you must know the amerage of the main breaker. In the NEC you will go to table 310.15b6 for a single phase service 400 amperes or less. If you were using aluminum it would as follows:
200a 4/0
150a 2/0
100a 2 awg

2007-11-20 20:36:18 · answer #2 · answered by sparky8786 3 · 0 0

You need to know what the distance between the boxes are, the type of wire you are using(IE copper,alum) and the amperage of the breaker box. Here is a site with a table and a calculator. Hope this helps

http://www.powerstream.com/Wire_Size.htm

2007-11-20 18:12:30 · answer #3 · answered by axxle 2 · 0 0

All these answers are good, but it may come down to the electrical company. They may have a requirement and you should check with them too before installing.

2007-11-20 20:46:28 · answer #4 · answered by Phil McCracken 6 · 0 0

There are many considerations and playing with your own electrical is dangerous.

You never want the liability and harnessing the electron requires expertise.

Be safe

2007-11-20 21:11:05 · answer #5 · answered by Anonymous · 0 0

Get an Ugly book (no kidding, that's what it's called) at an electric supply place. Just full of useful electrical information.

2007-11-20 19:01:22 · answer #6 · answered by Anonymous · 0 1

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