In article , "Bob" wrote:

"john" wrote in message
...
It is simply a multiwire circuit. As long as you use a 240v breaker for
the two circuits, it fine; maybe.

I disagree. You are allowing 40 amps (2 * 20) across a single conductor (the
neutral) by sharing it with two single phase 20 amp circuits.

Nope, not if the two hot conductors are on opposite legs of the 240V service
(which is the only way to meet code). In that case, the current in the neutral
is the *difference* of the two hot currents, not the sum.

--
Regards,
Doug Miller (alphageek-at-milmac-dot-com)

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