Home Automation - 220volt receptacle

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04-26-00, 07:38 AM
on April 21 you stated that a 220v receptacle could not be created using 2-110v hot wires. Does that mean that a 220v has to be run directly from the panel?

04-27-00, 11:30 AM
A 220 volt receptacle is created by using 2 110v hot wires from different phases. It must be run from the breaker panel because it needs to be protected by a 2 pole common trip circuit breaker. If the breakers are not tied together,it would be possible for one leg to trip, but not the other. This creates a risk of one side of the receptacle still being hot, and therefore dangerous. Believe me, I have discovered this the hard way! Also, if you were to use the hot wires from existing circuits, and you switched one off, it would be possible that voltage could backfeed through whatever is on the 220 v receptacle into all or part of the circuit you had switched off, also very dangerous!

Joe

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by imcbob:
on April 21 you stated that a 220v receptacle could not be created using 2-110v hot wires. Does that mean that a 220v has to be run directly from the panel?<HR></BLOCKQUOTE>
04-28-00, 07:23 PM
hello imcbob,
yes a 220 needs to be run from the panel on 2 seperat phases for reasions stated by joe.