ECN Forum Forums General Topics of the Trade General Discussion Area Equipment ground bar

ps~ on a steel structure.......

Escott,

I would have to say the key issue expressed by everyone [and what I would like to know also] is if there is a Jumper between the existing bus and the new bus.

That would make the Unbalanced Current flow within the Grounded Conductor[s] only - instead of getting to the Grounded Conductor through the Metallic Enclosure.
I know you know this [Ralph Crandom again ...], just added that info to help readers whom may not.

Someone mentioned placing the EGCs on the new bus - which sounds like a good idea too. A Bonding Jumper may still be needed - sized accordingly per highest OCPD of circuits used per the EGCs on that bus.

That's wierd the Factory Supplied Grounded / Grounding Conductors' bus is so limited to available space!
Then again, the amount of Residential work I do is so little, have hardly no clue to what's going on anyway!


Did a Custom House design and install in early 2000, did a Spa last July, and just got a Residential Service relocation / upgrade job last week.
Three Residential jobs in two years [almost three!!!], with maybe 5 between 1995 and 2000 gives me a close to 1 per year rate!

Scott s.e.t.

I'm with Hotline on this part
and this part


but I'm not so sure about this part



NEC proposal for the number of spaces on a noodle bar?

<Scratching my noodle>,
Doc



[This message has been edited by The Watt Doctor (edited 11-25-2002).]