Hi.
Wiring a 240VAC main breaker panel to a sub-panel; have the red, black and white AWG10 conductors.
Phase1--------------------red---------------------phase1
Phase2-------------------black-------------------phase2
Neutral--------------------white-------------------neutral strips bonded to metal boxes both ends.
Do I have to add
Ground--------------------green------------------ground connected to both metal boxes.
What does the redundancy achieves ?
If yes, can the ground be AWG18 ? Seen that in older installations.
Wiring a 240VAC main breaker panel to a sub-panel; have the red, black and white AWG10 conductors.
Phase1--------------------red---------------------phase1
Phase2-------------------black-------------------phase2
Neutral--------------------white-------------------neutral strips bonded to metal boxes both ends.
Do I have to add
Ground--------------------green------------------ground connected to both metal boxes.
What does the redundancy achieves ?
If yes, can the ground be AWG18 ? Seen that in older installations.