Junction Box Grounding
Junction Box Grounding
(OP)
I have a three core power cable and a single core ground cable, both cables are going to a motor.
I need to put a junction box for both of these cables before motor. In other words I need to put a junction box in between power supply and motor.
Now can I ground the body of the junction box with the same ground cable that is going to the motor? Or do I need to run a separate cable for grounding the body of junction box?
I need to put a junction box for both of these cables before motor. In other words I need to put a junction box in between power supply and motor.
Now can I ground the body of the junction box with the same ground cable that is going to the motor? Or do I need to run a separate cable for grounding the body of junction box?






RE: Junction Box Grounding
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If we learn from our mistakes I'm getting a great education!
RE: Junction Box Grounding
Could you please state the standard confirming the use of the earth conductor for both the purpose. Cause IEC 60364-5-54 does not specifically say that it is permitted or not.
RE: Junction Box Grounding
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If we learn from our mistakes I'm getting a great education!
RE: Junction Box Grounding
RE: Junction Box Grounding
Not just permitted, required.
Metallic raceways and junction boxes must be bonded to the branch circuit grounding conductor. I'd cite the paragraphs, but I left my code book behind.
RE: Junction Box Grounding
RE: Junction Box Grounding
Bill
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"Why not the best?"
Jimmy Carter
RE: Junction Box Grounding
Also NEC permits splicing the grounding conductor at the junction box if the connectors are listed [for ground] and well
fastened in place.
See art. 250.148 Continuity and Attachment of Equipment.
Art.430.12 says:
"(E) Equipment Grounding Connections. A means for attachment of an equipment grounding conductor termination
in accordance with 250.8 shall be provided at motor terminal housings for wire-to-wire connections or fixed terminal
connections. The means for such connections shall be permitted to be located either inside or outside the motor terminal
housing."