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Old 01-28-2015, 08:30 PM   #1
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Grounding Two Prong Outlet?


I have an older 1950s style home that I recently purchased. Unfortunately their are old style two prong outlets. I want to install 3 prong outlets but safety is a big concern. I know the outlets have to be grounded to install a 3 prong. I went around the house and checked the outlets with a surge protector I have. The surge protector has a light to indicate if the outlet is grounded or not. Some of the outlets showed a strong green light meaning they were indeed grounded. However, other outlets displayed a weaker, dim green light. I guess meaning the ground is weaker at those outlets. I took it a step further and popped out the old outlets. I used a tester, one end on hot other on metal box. It lit up showing there is some kind of ground. Upon further inspection, I noticed that there appears to be copper ground wire wrapped around a screw on the inside of the box. My question is, is this setup ok for now? The copper is too short to reach the ground screw on the new outlet.
I just had new service line, outside panel and breaker box installed, and ground wire ran outside from the box. Am I good to go? Should I still consider GFCI?

Thanks
Mike
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Old 01-28-2015, 08:35 PM   #2
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The upgraded system ground has nothing to do with the branch circuit ground or the third prong on the receptacles.

Three prong receptacles can be used on a two wire system without a ground if gfi protected and labeled "no equipment ground".

A push in connector can be used to extend the short ground to reach the device and also allow the box to be grounded.
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Old 01-28-2015, 08:39 PM   #3
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ok thats what I wanted to make sure of. I will use a push in connector. I was thinking about adding GFCIs also just for some extra piece of mind. Thank you
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Old 01-28-2015, 08:56 PM   #4
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GFCIs are wont hurt, they are a good idea.
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Old 01-28-2015, 09:57 PM   #5
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Quote:
Originally Posted by Jump-start View Post
GFCIs are wont hurt, they are a good idea.
Assuming he really does have a good ground at each receptacle there is no need nor reason to add GFCIs to circuits they are not required on!
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Old 01-28-2015, 10:00 PM   #6
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Originally Posted by Msradell View Post
Assuming he really does have a good ground at each receptacle there is no need nor reason to add GFCIs to circuits they are not required on!
True, but considering we have no way of knowing the true integrity of his EGC system it wouldn't be counterproductive.
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Old 01-28-2015, 10:20 PM   #7
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"No equipment ground" label


Quote:
Originally Posted by Jim Port View Post
The upgraded system ground has nothing to do with the branch circuit ground or the third prong on the receptacles.

Three prong receptacles can be used on a two wire system without a ground if gfi protected and labeled "no equipment ground".

A push in connector can be used to extend the short ground to reach the device and also allow the box to be grounded.
Where should you affix the "no equipment ground" stickers that come with the GFCI outlets? On the wall plate? On the outlet under the wall plate (seems counter productive to me)? Should you put a sticker on all three prong outlets downstream of the GFCI?
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Old 01-28-2015, 11:35 PM   #8
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The sticker should be on the plate itself on every none grounded GFCI protected 3 prong outlet.
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Old 01-29-2015, 02:35 AM   #9
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If the metal box is grounded, use self grounding receptacles.
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