NMB with Isolated ground ?

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ritelec

ritelec

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Jersey
Do they make 12-2 or 14-2 nm-b with an isolated ground (2 grounds), and if so, what would it be called?

Thank you.

Rich
 
around here it's call 12/3 W/G (or 14/3 W/G) with the red re-identified :D
 
Thanks augie47........

yeah, tape the red green (or srtip it and save on the tape),,, but would that be code?

Probably not.

Do they make nm with 2 grounds?

Or would you have to go with mc with the sheath being rated for ground?

Or is taping the red code compliant?
 
ritelec said:
Thank you augie47.

I will be taking that as a no!


Thou shalt not tape the red wire green.


:thumbsup:
Click to expand...

Perhaps I misread it.. I do that a lo....t, but, as long as it's part of a cbale assembly, it seems to me you can tape it.. the catch might be the "where conditions of maintenance ensure,,,,," partm
 
I havn't looked it up in a while, but didn't they change that a couple of code cycles ago, where the tape was not acceptable on switch legs and such, that it had to be heatshrink or permanant marker to re-identify?
 
Assuming that the circuit originates at the service equipment and the box at the load end is non-metallic, there is no need for an "isolated" ground. The normal installation with NM that orginates at the service equipment and it terminated in non-metallic boxes provides the same benefit at an isolated ground circuit.
 
don_resqcapt19 said:
Assuming that the circuit originates at the service equipment and the box at the load end is non-metallic, there is no need for an "isolated" ground. The normal installation with NM that orginates at the service equipment and it terminated in non-metallic boxes provides the same benefit at an isolated ground circuit.
Click to expand...

Yep. IGs in standard resi is a joke.
 
don_resqcapt19 said:
Assuming that the circuit originates at the service equipment and the box at the load end is non-metallic, there is no need for an "isolated" ground. The normal installation with NM that orginates at the service equipment and it terminated in non-metallic boxes provides the same benefit at an isolated ground circuit.
Click to expand...


jumper said:
Yep. IGs in standard resi is a joke.
Click to expand...

...not if you have hifi/audiophile customers. Then again, nothing standard about them.
 
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I recently did one in a commercial bldg. that was about 3 sub panels away from the service. Tried to gently explain to the specifier that it was useless to feed it from the sub panel unless we had a separate insulated ground back to the service. They didn't want to hear it. See this a lot.
 
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