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Old 06-04-2011, 03:31 PM   #1
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can #6/2 NM wire (White,Black, bare wire ground be used for spa ?


Question: My home was built in 1996. Has dedicated circuit of 240 volt with NM wire (1 hot-black, one neutral-white, and a bare ground. All three wires are same guage (#6). I have been told that this set up can be used by installing a 2 pole 50 amp gfci in my 200 amp box and using the white neutral as a hot lead and using bare wire as ground, assuming all equipment is 240 volt. There are companys which sell spa packs to order with 3 wire hook up. Is this idea safe?legal? or am I going to have to go to a 4 wire set up? Any feed back from knowledgable electricians will be greatly appreciated. Thanks, T.T.p.s. Heater will be a 5.5kw


Last edited by T-texas-43; 06-04-2011 at 03:34 PM. Reason: added a p.s.
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Old 06-04-2011, 06:29 PM   #2
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can #6/2 NM wire (White,Black, bare wire ground be used for spa ?


IF you mark or label that white conductor to another color, such as black, red, or blue, AND there is no neutral required for the tub, then it should be sufficient.

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Old 06-04-2011, 08:23 PM   #3
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can #6/2 NM wire (White,Black, bare wire ground be used for spa ?


It depends on the spa.
This is not an "older" circuit. It is simply a straight 240v circuit.
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