Bonding Bushings

dmanola7

I am adding a sub-panel next to the main outdoor panel and I was wondering if I had to put bonding bushings inside of each panel on both ends of the rigid nipple.

TxElectrician

Would you need the bonding bushings if the sub panel was 50' away? 150?
Same applies to 4" away.

dmanola7

Well the distance is irrelevant, I know I need the bonding bushings, just wanted to make sure I needed one on both sides. Where is Magnettica when you need him? lol

TxElectrician

why do you need one?

ampman

are you not running a grounding conductor

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dmanola7

why do I need a sub-panel? because the electrician that wired the house filled the main panel to its full capacity and then added twin breakers at the bottom. There is absolutely no room for anymore circuits plus the cover is hard to get on. A sub-panel should have been installed from day 1

dmanola7

of course I am running a grounding conductor, but the sub panel itself stills needs to be bonded

TxElectrician

it does need to be bonded, it does not require a bonding bushing on either end of nipple.

Magnettica

Thanks dmanola7, it's nice to be respected by your peers.

As to answering your question, you only need to bond the nipple once.

250.96 Bonding Other Enclosures.
(A) General. Metal raceways, cable trays, cable armor, cable
sheath, enclosures, frames, fittings, and other metal non–
current-carrying parts that are to serve as grounding conduc-
tors, with or without the use of supplementary equipment
grounding conductors, shall be effectively bonded where nec-
essary to ensure electrical continuity and the capacity to con-
duct safely any fault current likely to be imposed on them.
Any nonconductive paint, enamel, or similar coating shall be
removed at threads, contact points, and contact surfaces or be
connected by means of fittings designed so as to make such
removal unnecessary.

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TxElectrician

this does not make the use of a bonding bushing mandatory

Magnettica

You're right, you could use a uh, now I can't remember what it's called instead of the bonding bushing.

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Magnettica

Bonding locknut.

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dmanola7

Thanks Magnettica, from now on your the man Im gonna run to for the CORRECT answers. These other jacklegs have probably never picked up a codebook in their life. (No offense to the jacklegs out there) I myself live by the code so its refreshing to have my questions answered with a code quote. Keep up the good work Magnettica!!

Magnettica

There's more than a few knowledgeable electricians around here other than me. But thanks.

It's always good to give a code reference.

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Magnettica

By the way... do you have to use the RIDGID nipple? Because if you can use PVC you never have to worry about bonding it. Just a thought.

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ampman

watch out mag. i think he is going to ask you out on a date

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an army of sheep lead by a lion will defeat an army of lions lead by a sheep

ampman

just wondering why you went ridgid instead of pvc

__________________
an army of sheep lead by a lion will defeat an army of lions lead by a sheep

TxElectrician

I would imagine I have been reading and using the code book since before you were born. Perhaps if you would actually open and read the book instead of just picking it up you could learn a bit more. Or you could just keep looking for someone to give you the answer.

ampman

only if its to SERVE as the equipment ground

__________________
an army of sheep lead by a lion will defeat an army of lions lead by a sheep

dmanola7

No thanks, im taken by a beautiful woman so that means he is up for grabs, you better go sell some copper to take him out