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Electrical - 3-0 Copper

3/0-AWG Stranded Black Copper THHN Wire

Copper Wire 2-0 

Southwire SIMpull 3/0-AWG Stranded Black Copper THHN Wire

https://www.lowesforpros.com/pd/Southwire-SIMpull-3-0-AWG-Stranded-Black-Copper-THHN-Wire-By-the-Foot/50101592   $3.01 - 10% bulk - 10% sale

 

The distance through the conduit from the main panel to the sub-panels in the house is about 210 feet.  I need 8 wires.

 

May be best to use Aluminum, eg http://www.lowes.com/ProductDisplay?partNumber=10155-295-13107808&langId=-1&storeId=10151&productId=3127469&catalogId=10051&cmRelshp=req&rel=nofollow&cId=PDIO1

Need to check it is ok to used jacketed cable in conduit.

Need to ask local electrical inspector what wire gauge they require.

 

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