? about 240 wiring

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  #1  
Old 04-10-00, 08:37 PM
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Question i keep reading these post about wiring 240 recp. with white, black, and ground. When i was in school in 96' i remember learning about that in the new NEC code you would need to use red and black for hot. White for neutral. And green for ground. Is this correct or can you use a 2 conductor with ground
 
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Old 04-10-00, 09:39 PM
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It is still acceptable to use a two/wire for a 220 volt circuit. they do not make a 2/wire without a neutral, so consequently, they allow, when necessary to use a two/wire that has a white for a hot leg, in a 220 situation. It must be clearly marked in any junction box that it is a hot rather than a neutral if pull or jb are used.
 
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Old 04-11-00, 02:44 PM
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2 wire/W Gnd is ok if the device doesn't use the neutral at all (EG heaters). If it
uses the neutral (such as a range or clothes
dryer), then you must run 3 wire W/Ground.
 
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Old 04-11-00, 04:29 PM
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hello jay,
yes you can run a 220 circuit with black white and ground, as long as it is a true 220 and not a 220/110. the white must be marked as a hot in all visabel locations. it is also aceptiabel to replaice an existing 220/110 with the 2 wire as long as panel is bonded in my area, but all new installs must be run in the 4 wire.
 
 

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