How to fix an "open ground" on a receptacle that seems grounded?
#1
02-03-15, 11:51 AM
How to fix an "open ground" on a receptacle that seems grounded?
In the master bedroom on one wall there are two receptacle that when tested shows “open ground”, I have replaced the receptacle on both (with new tamperproof receptacles) and while doing that checked to ensure there was a “ground” wire connected from the receptacle to the box (see image below). One thing to note – the room is aluminum wiring (but so are most of the house and no other receptacles have this issue).
At this point I am not sure what could be causing it, any suggestions?
Thanks,
At this point I am not sure what could be causing it, any suggestions?
Thanks,
#2
02-03-15, 01:20 PM
Is it Romex or BX between the breaker box & the switch box? Do I see a bare ground wire coming out of the cable? If so, why isn't it connected to the green screw on the switch?
#3
02-03-15, 01:39 PM
You first need to use something more accurate then a plug-in tester. Measure between hot and ground with a multimeter, preferably analog.
But were they rated for aluminum wiring?
I have replaced the receptacle on both (with new tamperproof receptacles)
#4
02-03-15, 06:23 PM
Group Moderator
The bare wire does appear to be connected to the receptacle in the picture. Like Ray said.... you'll need to check from black to the bare ground. There may be a problem at the other end of the cable.
#5
02-03-15, 07:21 PM
Member
the room is aluminum wiring
#6
02-03-15, 09:09 PM
Pulpo: it is connected to the green screw (ground)...
ray2047: they are not, I use anti-oxidant paste for that, as with the rest of my house but only these 2 receptacles are causing me issues.
CasualJoe: this is in Canada, for about 5-10 years aluminum was used in construction (sadly). Have you ever used or reviewed AlumiConn Aluminum to Copper Lug as a permanent solution?
ray2047: they are not, I use anti-oxidant paste for that, as with the rest of my house but only these 2 receptacles are causing me issues.
CasualJoe: this is in Canada, for about 5-10 years aluminum was used in construction (sadly). Have you ever used or reviewed AlumiConn Aluminum to Copper Lug as a permanent solution?
#7
02-04-15, 04:55 AM
Forum Topic Moderator
I have only heard good reviews of the King Alumiconn connectors. They have been out several years.
#8
02-04-15, 05:15 AM
Member
CasualJoe: this is in Canada, for about 5-10 years aluminum was used in construction (sadly). Have you ever used or reviewed AlumiConn Aluminum to Copper Lug as a permanent solution?
http://www.cpsc.gov//PageFiles/118856/516.pdf
ray2047: they are not, I use anti-oxidant paste for that, as with the rest of my house but only these 2 receptacles are causing me issues.
