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Old 05-25-2010, 05:33 PM   #1
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To nut or not?


Are wirenuts required on the pigtailed ground wires inside a junction/light box?
Or is just twisting them together OK? I imagine they need to be wirenutted just to help keep them from untwisting?

Thanks!

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Old 05-25-2010, 05:34 PM   #2
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Actually I'm curious about that, I rarely ever wirenut or put grounds together, I normally rely on the junction box, by putting the grounds against a screw, sometimes multiple grounds on same screw, but if I can, I use different screws. should I be putting grounds together instead?

Last edited by Red Squirrel; 05-25-2010 at 05:39 PM.
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Old 05-25-2010, 05:39 PM   #3
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You need a wirenut! A long time ago in a far far away land (sorry, saw Shrek last night) they used to let you get away with just twisting the solid copper grounds of romex wiring together and tucking them away, but try that nowadays and you will surely fail your inspection!

Multiple wires under one screw is not advisable nor is multiple screws! There is typically only one threaded ground screw hole in a box, some cut-in (old work) boxes have two! Tie one wire to the box via a real ground screw and pigtail them all together with a wirenut!

If you use a self tapping screw you will probably fail your inspection too! If you're caught!
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Last edited by sparks1up; 05-25-2010 at 05:44 PM.
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Old 05-25-2010, 05:43 PM   #4
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I know I had to greenscrew a pigtail on the metal ceiling light boxes, but yeah, you twist those 12g ground wires together, and there's no WAY they'll "unravel"....right? RIGHT??? LOL

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Old 05-25-2010, 05:44 PM   #5
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Tell it to the judge (AHJ)! I also added to my post above!
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Old 05-25-2010, 06:00 PM   #6
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Quote:
Originally Posted by sparks1up View Post
Tie one wire to the box via a real ground screw and pigtail them all together with a wirenut!
Yeah, I'm doing all that, just seems overkill to wirenut the grounds....

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Old 05-25-2010, 06:26 PM   #7
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In Canada one ground under each side of the ground screw in the box is allowed. The ground screws have raised guide to hold the wire under the screw.
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Old 05-25-2010, 06:56 PM   #8
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Quote:
Originally Posted by joed View Post
In Canada one ground under each side of the ground screw in the box is allowed. The ground screws have raised guide to hold the wire under the screw.
I am tempting to go in Canada and get a bunch of them and bring it back to the states they are heckva eaiser to land the grounding conductors.

However for the rest of details there are couple ways to get the grouding conductor legit one is use wirenuts { any type including the green one } or copper crimp sleeve both are legit.

The copper crimp sleeve you will need either copper crimping tool or lineman plier only if they have provisation for crimping it (some manufacter will list that as one alterative tool it can be used on crimp sleeve )

Merci,Marc
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Old 05-25-2010, 09:46 PM   #9
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Using separate ground screws is not a problem at all. Other than more work an a bit more material.

More than one wire under a screw is a big no-no. As is using a sheet metal screw.

You DO need some form of mechanical connection on multiple spliced grounds. IE: Crimp or wire nut.
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Old 05-27-2010, 01:07 AM   #10
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wirenuting the grounds is overkill??


Just twisting the wires together would be a total homeowner move
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Old 05-27-2010, 07:44 AM   #11
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Quote:
Originally Posted by jimmy21 View Post
wirenuting the grounds is overkill??


Just twisting the wires together would be a total homeowner move
I'm glad my question gave you such a good laugh. However, I've opened MANY junction boxes and light boxes that the ground wires WERE just twisted together with NO wire nut, (and I'm sure "pros" have found the same thing) hence my question. I imagine they were not used because the boxes were very full and adding a wire nut on the ground would have taken up too much room, or they were forgotten, or the guy had a fight with his wife that morning, or, or, or..... And yes, I AM 'just a homeowner' but I'm one that passes all of my inspections....... the electric, the plumbing, the mechanical, the building, etc. so by being here and asking questions, I figure I must be doing SOMETHING right.

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Old 05-27-2010, 08:27 AM   #12
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why are you asking if you pass all your inspections
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Old 05-27-2010, 09:37 AM   #13
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Clarification? Because others wonder the same thing? (see post #2)
Because I want to CONTINUE to pass all of my inspections?
Because codes are different on Mars?
Take your pick.

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Old 05-28-2010, 12:21 PM   #14
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There are special green wire nuts that allow you to extend one longer bare grouns conductor through the top, but nut together multiple other shorter ones. Multiple wires nutted + single wire to ground.
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Old 05-28-2010, 02:57 PM   #15
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some mechanical connection is required.


and to the guy that said at one time it was legal to just twist the wires together:

when?

before wire nuts were used, joints were soldered and taped. I do not know of any time simply twisting them together was legit, at least in this type of installation.

You would really appreciate wire nuts if you ever had to carry around a solder pot for making wire joints.
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