With 220 volt feed to the house, it's very possible that if each
"leg" was running the same amperage, you'd have zero amps in the
neutral. So, the neutral is only for the imbalance.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"BillGill" wrote in message
news
:
: The obvious to me answer is that if you use just one
: neutral all of the current from all of the circuits
: winds up running through that one piece of wire. This
: could easily lead to an overload condition.
:
: Bill Gill