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sil 10-17-2007 07:27 PM

Plugging power cord in a non-grounded outlet
I tested my 3 prong outlet only to find out it was not grounded. Do I need to have it grounded in order to plug all my audio visual including my plasma into the outlet?
Is it most likely that I would need to re-wire to copper in order to install a grounded outlet? Is it most likely aluminum wiring in my existing outlet?

NateHanson 10-17-2007 09:13 PM

An ungrounded outlet could be copper or aluminum. Same with a grounded outlet. It probably just means that the cable feeding that outlet only has 2 wires (hot and neutral, no bare ground wire).

I'd shut off the circuit, remove the outlet, and look at the wires in there to confirm this. If this is indeed the case, then the fix would be to replace that cable back to the panel with modern 2-conductor, plus ground romex cable.

ajan246 10-17-2007 11:02 PM

It could be grounded elsewhere on the circuit though...

sluggermike 10-18-2007 12:13 AM

Another thing to consider when looking at the duplex receptacle is the polarity. Because it wasn't grounded, it is also possible that the person who hooked it up crossed the polarity.

J. V. 10-18-2007 12:23 PM

I would'nt plug a big screen TV into a non-grounded receptacle. Run a new NM cable with ground. Once you start adding components to the system, you will be best served to have a dedicated circuit.

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