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View Full Version : AWG size for 40 amps.

shortround3
May 18, 2008, 07:25 AM
Remodeling kitchen. I now have an oven with 8AWG and a 30 amp breaker. The new oven requires 40 amps. The run is 20 feet. Will the 8 awg do with a 40 amp breaker?

Thanks,

Shortround3.
donf
May 18, 2008, 08:22 AM
8 AWG - Copper, is rated for 40 Amps.
stanfortyman
May 18, 2008, 08:51 AM
#8 in NM and UF cable is rated for 40 amps.

#8CU THHN and most other conductor/cable types is rated for 50 amps.
Washington1
May 18, 2008, 01:48 PM
#8 in NM and UF cable is rated for 40 amps.

#8CU THHN and most other conductor/cable types is rated for 50 amps.
Good answer! Complete, with facts!