What to do with ground wires?


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Old 04-07-16, 09:17 AM
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What to do with ground wires?

I'm replacing an old light fixture on our front porch. It did not have a ground wire. There is a ground wire coming from the house, that was connected to a ground screw on the light bracket.

The new light has a ground wire. Do I connect the ground wire from the house and the light together?

And if so, do I then connect them both to the ground screw? Do I just twist them together and then connect to screw?

(Please tell me I don't have to go back to Home Depot for one little plastic cap thingie!

After trying to figure this out I think I should mention that the box is plastic.
 
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Old 04-07-16, 09:43 AM
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Since the box is plastic, you may simply connect the house ground to the fixture ground.
Andy
 
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Old 04-07-16, 10:15 AM
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Since the box is plastic, you may simply connect the house ground to the fixture ground.Andy
Andy is correct but that will require a plastic cap thingie called a wirenut.
Most new fixtures come with wirenuts that can be used.
 
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Old 04-07-16, 10:31 AM
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Guess I'm on the way back to Home Depot! Thank you!
 
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Old 04-07-16, 10:43 AM
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Most new fixtures come with wirenuts that can be used
But the included ones are often crap that contains no metal spring inside.
 
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Old 04-07-16, 10:51 AM
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Actually.... they seem to be coming with a better version of orange wire nuts that does include the metal insert.
 
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Old 04-10-16, 06:08 AM
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Although just twisting the ground wires together is no longer regarded as sufficient, I would say that the all plastic wire nut that came with the light fixture will suffice provided it did not split open when attached.

If the little bar had two extra screws not counting those used for other things such as hold the bar to the box then you could attach one ground wire to each, saving the need to buy another wire nut.

Two wires may not go under one screw except at terminals specifically designed for two wires. Use of a pigtail (and a trip to Home Depot for another wire nut) gets around this, which does not accomplish anything useful in this specific scenario given a plastic box.
 
 

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