RV Receptacle Equipment ground

[augie47]

Several RV Receptacles are mounted in a 4" sq cover & mounted to a 4" sq box which is connected to the panel by EMT (Surface run in a shed).
. A bonding jumper is installed between the box and the receptacle.
Is this a violation ?? (Thinking primarily of the wroding in 551.76)

 

[ptonsparky]

Meaning the raceway would not be allowed? An EG conductor must be used all the way back to the SE.
FWIW. That is what I read.

 

[wwhitney]

Which part of 551.76? Are you suggesting that the connection of the jumper to the box is not by "listed means"?

As a matter of language, "shall be permitted to be spliced by listed means" is a null requirement, it doesn't mean "shall only be permitted to be
spliced by listed means."

Cheers, Wayne

 

[ritelec]

(A) exposed non-current carrying metal parts of fixed equipment, metal box's, cabinets, and fittings that are not electrically connected to grounded equipment shall be connected to equipment grounded conductor conductor run with circuit conductors...

What is "electrically connected"? EGC?

I would think if the emt has no egc in it the answer is no.

 

[augie47]

I'm saying it means a wire type conductor must be run for grounding... but that's my read.....

 

[wwhitney]

EMT is an EGC per 250.118. And since 551.76 doesn't say "of the wire type," there's no requirement to use an EGC of the wire type.

Cheers, Wayne

 

[augie47]

EMT is an EGC per 250.118. And since 551.76 doesn't say "of the wire type," there's no requirement to use an EGC of the wire type.

Cheers, Wayne

Understand that...however, .. the wording is a bit strange to me... to grounded equipment shall be grounded by an equipment grounding conductor run with the circuit conductors almost sounds like a wire type.

 

[don_resqcapt19]

Understand that...however, .. the wording is a bit strange to me... to grounded equipment shall be grounded by an equipment grounding conductor run with the circuit conductors almost sounds like a wire type.

And the raceway is not run with the circuit conductors? Where the code requires an EGC of the wire type, it says exactly that. See, for example, 440.9.

 

[wwhitney]

I wonder if 551.76 is a hold over from the days that it was permissible to run a feeder to a detached structure without an EGC and just reestablish the EGC at the feeder disconnect. A practice that 551.76 disallows for RV parks.

Cheers, Wayne

 

[ptonsparky]

I wonder if 551.76 is a hold over from the days that it was permissible to run a feeder to a detached structure without an EGC and just reestablish the EGC at the feeder disconnect. A practice that 551.76 disallows for RV parks.

Cheers, Wayne

Sounds plausible. RV parks may very well be direct bury conductors.

 

[zbang]

BTW, if you go back to 1984 (it was the one I grabbed), 551.76 was then 551.48 and at a glance looks identical to later versions.