On Saturday, January 11, 2020 at 4:18:37 PM UTC-5, Dean Hoffman wrote:
On 1/11/20 3:07 PM, dpb wrote:
On 1/11/2020 2:44 PM, BURNER1 wrote:
WE ARE REMODELING THE KITCHEN AND THE EXISTING WIRE IS NM-B 4/2 . IT
IS 2 FT
TOO SHORT FOR THE NEW DOUBLE OVENSÂ* THhaTE KW RATING IS 240V 8.9kWÂ* OR
208 6.7 kW 40 AMP BREAKER WHAT SIZE WIRE SHOULD i HAVE ?

40A breaker is #8, 50A #6.Â* If rewiring the circuit, I'd suggest going
the larger (#6) for the possible decision down the road to have a 50A
appliance.

Is that only 3 conductor? No equipment ground?

And/or neutral? You can generally install new ovens to an existing
circuit that has a shared neutral and ground, but the poster said 4/2
which implies just two conductors?