Hi there- I have a new oven I plan on hard wiring to existing three wire 240 amp outlet. The new wiring has four wires and wiring instructions give several options for wiring:
B. CONNECTING THE GREEN APPLIANCE WIRE TO THE NUETRAL(WHITE)SUPPLY WIRE-WHERE LOCAL CODES PERMIT
- Connect the green and white appliance wires to the nuetral(white)supply wire in the junction box.
- Connect the black appliance wire to the black(l1) power supply wire in the junction box.
- Connect the red appliance wire to the red(l2) power supply wire in the junction box.
OR
C. CONNECTING THE GREEN APPLIANCE WIRE TO A GROUNDED SUPPLY WIRE OR A GROUNDED COLD WATER PIPE-WHERE LOCAL CODES PERMIT.
- seperate the green and white appliance wires
- Connect the white appliance wire to the neutral(white)supply wire in the junction box.
- Connect the black appliance wire to the black(l1) supply wire in the junction box.
- Connect the red appliance wire to the red(l2) supply wire in the junction box.
- Connect the green appliance wire to a grounded supply wire in the junction box or to a grounded cold water pipe.
- If connecting to a grounded cold water pipe , a seperate copper grounding wire(No. 10 min.) must be connected to a grounded cold water pipe by means of a clamp and then to an external grounding connector screw.
My question is the outlet has only red, black and white wires(three wire). Is it safe to use step b for hard wiring regardless of local code? Any help would be appreciated.