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mm wrote:
On Wed, 27 Dec 2006 21:07:18 -0600, "Pete C."
wrote:


With an open neutral and 240V appliances off, the 120V appliances on
each leg attempt to balance out the voltage between then (a complex and
changing series - parallel arrangement) and you will get localized over
and under voltage conditions depending on the balance of what is on at
the time. Turning on 240V appliances tends to have fairly dramatic
effects since they bridge both hot legs and tend to be significant
loads.

How can a bad neutral keep the 240 volt oven from working, when the
oven doesn't have a neutral?

How about: by affecting control circuitry, which may well be 120v?
Besides, with the totally random set of loads possible, all sorts of
things
can happen. BTDT. Meanwhile, disconnect all loads possible until
situation is rectified.

Regardless, overarching problems first, and an open neutral is a very
serious threat.

J


The control circuit can't draw much current. If it's really a 240 volt oven,
what could the control current be? Half amp?

Al