In article ,
Ignoramus2331 wrote:

On Fri, 03 Aug 2007 14:53:55 GMT, Doug Miller wrote:
In article , Ignoramus2331
wrote:
Can I have a circuit, protected by a double pole circuit breaker, that
would have a neutral and both 220v, as well as 110v, outlets.

Yes.

"Multiwire branch circuits shall supply only line-to-neutral loads. ...
Exception: Where all ungrounded conductors of the multiwire branch circuit
are
opened simulaneously by the branch-circuit overcurrent device." [2005 NEC,
Article 210.4(C)]



This is great. I have existing conduit going into my basement
"workshop". It supplies 110v right now. I want to rewire it to supply
20A 220v, with neutral, and will add 110v outlets on both legs, as
well as 220v outlets.

On the main panel, I will use a double pole 220v breaker so that ``all
ungrounded conductors of the multiwire branch circuit are opened
simulaneously by'' that breaker.

The reason for it I want to convert my drill press to three phase with
VFD, mostly for tapping. I need 220v for it.

Also, on the same circuit, outside the basement wall, I want to add
outdoor receptacles (110v and 220v) for my pool's pump. It would be
GFCI protected and I will use outdoor rared hardware.

The above mentioned pump runs a water slide on my inflatable round
pool, which also doubles as a water filter.

i

Other than the obvious concern about whether your existing conduit has
enough room for the extra wires, I'm curious about your tapping
requirements. We use standard 120 VAC drill presses all the time for
tapping, with Tapmatic or other brand tapping heads. Are you talking
about rigid tapping? Just curious.