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-   -   is ground screw on light switch necessary (http://www.diychatroom.com/f18/ground-screw-light-switch-necessary-168620/)

SS396 01-08-2013 05:21 PM

is ground screw on light switch necessary
 
hi, I'm replacing the 3 light switches in my entrance way. the 3 light switches are in the same triple size phenolic looking box. (two 3 ways and one single). the switches I'm removing had no ground screw. the new switches have a ground screw. all the grounds from the six romex wires entering the box tie together with a crimp connection. I'd really rather not add any addditionl clutter in the box if it's not necessary. Can I replace the switches and not bother with the ground screw or is that a violation since the new switches have the ground screw. Thanks

rrolleston 01-08-2013 05:38 PM

All devices are required to be connected to the ground.

fa_f3_20 01-08-2013 07:20 PM

Yeah, you have to ground them. The screws that hold the cover plate on are in contact with the switch body. If the body of the switch becomes energized, the cover plated screws will also become energized. Ask me how I know this...

AllanJ 01-08-2013 10:04 PM

Does at least one of the ground wires crimped together extend past the crimp at least a half inch? You would crimp three pigtails (short lengths) to that end stub (total of 4 wire ends) to connect up the ground screws of the switches.

If the switches did not have green ground screws then you would squash the end of the respective pigtail between the mounting strip (yoke) of the switch and the lip of the box where it is screwed on.

SS396 01-10-2013 06:27 PM

ok , there is no excess wire beyond the crimp where the six grounds are crimped together. If i have to add 3 more grounds for the switches that makes 9 wires to be twisted together. is there a wire nut approved for nine each nbr 14 ga wires? For that matter can 9 wires be crimped together with a barrel splice. thanks again.

AllanJ 01-10-2013 08:12 PM

Nine wires can be connected together in smaller groups for example five of the nine wires in one bundle and the other four in another bundle with a #14 pigtail between the two bundles.

theatretch85 01-10-2013 10:45 PM

Couldn't one ground wire be looped/daisy chained between all three switches and just have one wire to attach to the existing crimp? Maybe cut one of the existing ground wire with enough length to install a crimp to join the two cut wires plus the new wire for the switches (this of course would shorten up the one ground wire however much the overlap is with the crimp).

info2x 01-10-2013 11:01 PM

Quote:

Originally Posted by theatretch85 (Post 1090822)
Couldn't one ground wire be looped/daisy chained between all three switches and just have one wire to attach to the existing crimp? Maybe cut one of the existing ground wire with enough length to install a crimp to join the two cut wires plus the new wire for the switches (this of course would shorten up the one ground wire however much the overlap is with the crimp).

removed for bad info. Thanks for correcting guys!

Techy 01-11-2013 05:32 AM

Quote:

Originally Posted by info2x (Post 1090828)
I would think not considering that would require multiple wires to be secured by one screw terminal which I don't believe to be good practice.



one continuous piece of wire, around all the ground screws. Very common.

tylernt 01-11-2013 10:44 AM

Quote:

Originally Posted by Techy (Post 1090856)
one continuous piece of wire, around all the ground screws. Very common.

Sometimes called "rabbit ears", from what I understand.

n0c7 01-11-2013 05:38 PM

If you're in Canada you're in luck, no grounding of light switches required. :thumbsup:

SS396 01-11-2013 06:04 PM

1 Attachment(s)
Quote:

Originally Posted by AllanJ (Post 1090707)
Nine wires can be connected together in smaller groups for example five of the nine wires in one bundle and the other four in another bundle with a #14 pigtail between the two bundles.

I sure did not know that and thank you. I just assumed they all had to be bound together in one fat lump. I guess any current flowing within the wire group can only originate from a single wire from the circuit breaker anyway. So does the option of splitting the bundle up into more than one group with a jumper also apply to a group of neutrals or a group of hots within the same large box? By the way, on closer inspection this is how I actaully found the six ground wires. gee :wink:does this look right?

AllanJ 01-11-2013 08:15 PM

Simple twisting is not good enough, so in the picture as shown, the sixth ground wire wrapped around the bundle of the other five is not adequately attached. It must be included in a crimp or wire nut.

Yes you could split up hot wires or neutral wires into separate bundles.

fa_f3_20 01-11-2013 11:16 PM

Quote:

Originally Posted by AllanJ (Post 1090707)
Nine wires can be connected together in smaller groups for example five of the nine wires in one bundle and the other four in another bundle with a #14 pigtail between the two bundles.

Another approach would be to use an Ideal connector.

Red Squirrel 01-11-2013 11:58 PM

TBH I never really bother, as long as the box is grounded properly the switch will also be grounded. Though I think the point of it is when the switch is not screwed into the box (ex: middle of construction) then it is still grounded.

Quote:

Originally Posted by n0c7 (Post 1091247)
If you're in Canada you're in luck, no grounding of light switches required. :thumbsup:

That is good to know, probably why I never done it myself. Lot of the stuff I've learned was from just seeing how others did it when I took something apart.


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