Comcast wrote:

I just purchased a Tappan 550W microwave that consumes 850W. I
also purchased a Xantrex Xpower 1000W inverter (modified sine wave).
snip

snip Is there a problem with the microwave
or inverter? Should I buy a more powerful inverter?

Some types of electrical or electronic equipments do not work or do not
work well on modified sine wave inverters. If you look in your manual
or at the Xantrex web site, it will tell you what those are.

That may be your problem. If it is, a pure sine wave inverter will cure
it. Guess what? It may be time to throw another bucket full of money
into your "hole in the water". :)

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jackerbes at adelphia dot net
(also receiving email at jacker at midmaine.com)