Splicing grounds...

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chevyx92

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VA BCH, VA
Scenario: 18"X18"X6" Metal J-Box has (20) 3/4" EMT's running into it and a few mc cables. Total number of grounds to be spliced is 15. What's the best way to accomplish this? Installing a ground bar maybe? Or can you bond the can with one EGC and then just splice each ground separately? What artice says they all have to tie together in the box?
 
A ground bar would be the easiest thing to use. We actually do this all of the time for installations just like you've mentioned.
 
I'll be the odd man out here and reccommend daisy chaining some of the InSure or Wago 10-port connectors. Fast, cheap, easy, and I wouldn't be hesitant to use them on a normally non-current carrying application.

Although if you're using mostly stranded wire, forget the InSure and use a ground bar.
 
mdshunk said:
My kids used to sing this song to me: http://www.youtube.com/watch?v=Ld1Jsburul4&feature=related

Are 10-port Wago's even a regular stock item where you buy stuff?
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:D

RE: the 10 port connectors. It all depends on the ownership of the supply house. The national, regional and local chains that carry Ideal usually have them or can pull them from their warehouse and have them in a day. The smaller independent ones, not so much. As a matter of fact, I think even HD carries them in the obscenely priced "retail packs."
 
use a ground bar, makes it look nice and when one comes back to add somethin, there is space for them. Stay away from any type of wirenut / wago whatever IMO
 
paul said:
Big Blue. :grin:

Okay, j/k. Ground bar kit.
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You might be joking, but if I was out on a call with nothing but that on the truck, I think I'd make it work. How many #12's they rated for, anyhow?
 
mdshunk said:
You might be joking, but if I was out on a call with nothing but that on the truck, I think I'd make it work. How many #12's they rated for, anyhow?
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According to Ideal's UL listed combinations PDF file, the blue 454 is listed for 3-6 #12's. I have never exceeded that limit in my life. ;)

Assuming having nothing but blue and red wing nuts on hand, I'll end up "daisy chaining" so that the wire nut won't be completely beyond its listing, thereby increasing the chance of a bad connection.
 
which is worse:

one big blue with the max #12's in it

or

daisy two greys or whatever??


IMO, every splice is a point that there could be problem, so I would say one splice with the big blue.

:remember: I would abort both and use gbar , but this is "what if"
 
peter d said:
According to Ideal's UL listed combinations PDF file, the blue 454 is listed for 3-6 #12's.
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the info I saw said three # 12s minimum and never gave a max..
 
I once had to interface four 3/4" EMT's with 24 12-2 MC's. I used a J-box and mounted two ground bars directly to the box with a pair of 8-32's each. Quick and neat, and the inspector was delighted.
 
LarryFine said:
I used a J-box and mounted two ground bars directly to the box with a pair of 8-32's each. Quick and neat, and the inspector was delighted.
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He was probably de-lighted because you hadn't turned the power on yet.






Ba dum ching!
 
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