Over head BC to deteached garage

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jjhoward

jjhoward

Senior Member
Location
Northern NJ
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Owner TJ Electric
NEC reference for proper installation of a 120V 20 amp overhead branch circuit to a garage?

I was considering UF cable with a messenger wire, but should the messenger wire be grounded??

Is 12 awg UF (UV rated) zipped to a messenger wire across 60' code compliant if the messenger wire is not grounded??

Thank you.
 
In 250.184(A)(1) Exception 2
Bare conductors shall be permitted for the neutral of overhead portions installed outdoors.

But this is allowing the messenger wire to be the neutral. But I don't find anything that says a messenger wire MUST be grounded.
 
In 396.60 :
The messenger shall be grounded as required by 250.80 and 250.86 for enclosure grounding.

No enclosures here, so I think I am OK, messenger wire is not tied to ground!
 
Thanks all.
Sanity check appreciated.
I try to hash this stuff out wtih my wife but she runs away when I approach with NEC binder.
 
celtic said:
I think you are good.

I did a bunch of NEC searching on this....the closest to a NO was 396.30.
Click to expand...

396.60, by it's refrence to 250.80 and 250.86 seems to indicate that the messenger should be grounded. Treating it as a raceway or enclosure for conductors.

2008
 
jjhoward said:
In 396.60 :
The messenger shall be grounded as required by 250.80 and 250.86 for enclosure grounding.

No enclosures here, so I think I am OK, messenger wire is not tied to ground!
Click to expand...

Exactly.
I went and read 250.xx...and was like the guy in my avatar :D

Pay attention to the end of 396.30 and what you must not contact :wink:
 
If you consider the messenger wire an enclosure then it should be grounded per 250.80 or 250.86.

But I don't interpret 396.60 as saying the messenger wire now should be treated as an enclosure. I understand this to say if we have enclosures on the either end of this run, we need to ground the enclosures via the messenger wire.

Maybe I am off the mark??
 
frizbeedog said:
396.60, by it's refrence to 250.80 and 250.86 seems to indicate that the messenger should be grounded. Treating it as a raceway or enclosure for conductors.

2008
Click to expand...

Not buying it.

250.80/86 applies to "Enclosure, Raceway, and Service Cable Grounding".

100 does not indicate a messenger is a "raceway". [ An enclosed channel ...]
 
396.30
Not sure how I can not let the conductors touch any walls...
I will be passing through a wall at the house and at the garage.
 
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