Microwave ovens with inverters [RE-wrenches]

[Bob Maynard, Energy Outfitters]

Frank,
Thanks for the heads up on the new microwaves, this is new info for us.  If
I were to take a guess at the future of mod-sine wave inverters, it would be
that at some point there will not be a testing company willing to put their
listing label(UL,ETL,etc.)on mod sine. How could they?  We can connect a
listed device(say a rechargable flashlight) to a listed mod sine inverter
and the listed device gets hot, fails, or even melts!
Regards,
Bob Maynard
Energy Outfitters
800-GO-SOLAR

-----Original Message-----
From: Frank Fowler, Crystal Pines Alt. Energy [mailto:cpae1 at aol.com]
Sent: Thursday, April 11, 2002 6:33 PM
To: RE-wrenches at topica.com
Subject: Microwave ovens with inverters [RE-wrenches]


Howdy all,
I have a customer who purchased a new microwave oven with an inverter in it.
He got it home, plugged it in, and guess what? It did not work. Of course he
has a mod. sine wave inverter. He called me to investigate the situation. We
took the oven back and them it did not work. They traded his for the same
model, and it did not work. We took it over to a neighbor who has a sine
wave inverter, and it worked! My conlusion: Mod. sine wave inverter won't
run the new inverter powered microwaves. Anyone else had this problem? Might
be a good lesson when designing systems. I have been trying hard to push
only sine wave inverters for home type systems. For cabins and such maybe
the mod. is still okay.

SUNcerely,
Frank Fowler
Crystal Pines Alternative Energy
4408 Pine Cluster Ln.
Yankee Hill, CA. 95965-9754
Tel. 530-532-1972
Fax. 530-532-1359
We are located in the Sierra foothills
just 30 miles southeast of Chico, CA.
"Living off the grid with the products we market, install and service"
www.solarenergy-alt.com
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