Sub-Panel: Pass or Fail?

[ICE]

Pipe right to the outlet box?....Illinois wiring.....

Alrighty then! What happens in the J-box?

 

[wwhitney]

Alrighty then! What happens in the J-box?

If you have a self-grounding receptacle, the fault path is the EGC pin to the receptacle yoke to screw connection to the receptacle box mud ring to the metal box to the metal conduit back to the supply. The EGC could be entirely non-wire type within the building wiring system.

If your device is not of the self-grounding type, you run a wire jumper from the device ground screw to the metal box.

Cheers, Wayne

 

[ICE]

The EGC could be entirely non-wire type within the building wiring system.

Granted it is a possibility however, I don't think that I have ever seen that. Perhaps it is a west coast practice to always use wire. Too many points of failure when things get loose. A stick of conduit is a great EGC until you get to the fittings. Then one loose lock ring defeats it.

 

[jar546]

A stick of conduit is a great EGC until you get to the fittings. Then one loose lock ring defeats it.

There is nothing like trying to run fish tape through EMT in a high-rise office building knowing you are only about 100' away from the j-box and emptying 200' of fish tape before you realize something is wrong and then find 100' of fish tape in an adjoining office suspended ceiling where one of the couplings blew apart and the people in that office could not figure out what that noise was. It is funny now, but it was not funny back then.

 

[wwhitney]

A stick of conduit is a great EGC until you get to the fittings. Then one loose lock ring defeats it.

A wire is a great EGC until you get to the connections. Then one loose wire nut defeats it.

Cheers, Wayne

 

[steveray]

Alrighty then! What happens in the J-box?

Jumper?

 

[BN4537]

Does the rain-tight fitting at the top of this panel interfere with bonding of the upper conduit?