what size wire do I need for a 40Amp wall furnace?

Question

William B · Accepted Answer

for a 40 amp draw, you need a # 8 Gage wire

ppe · Answer

8 g

? · Answer

6/2 wire 

40 amps is a lot

gr8music at qtrtilldawn · Answer

12 gauge would handle a 120vac furnace, 10 gauge for a 220vac furnace. It also depends on the distance it travels.

Rondi · Answer

8 gauge.

Don't let anyone talk you into using 10 gauge.

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