mortond wrote:
Well, I guess I sort of knew what the responses would be. Hoped I could
save a chunk of change!

So...does anyone know of a good source for (inexpensive) 110 volt 50 amp
isolation transformers?
I live 30 miles East of San Francisco.

Thanks for keeping me on the straight and narrow :-(

David


As you know, the transformers are not cheap. But you can get a 30A
Charles for $400, which isn't too bad.

I see you're headed toward a 50A transformer. These are likely to be
three times the price of the 30A models. Also, you may want to consider
that 120V 30A service may be easier to find than 120V 50A. So two 30A
transformers may be more convenient.

Depending on the transformers, it may be possible to wire the
secondaries of two 30A transformers in parallel, giving you effectively
60A of transformer capacity (they'll run cooler). I'm reluctant to
recommend that unless the two transformers are compatible. You should
definitely check with the manufacturer before attempting that.

Whether or not you parallel the secondaries, you always have the option
of paralleling the primaries! If you choose to go the 50A service route,
go ahead and put the two 30A transformer primaries in parallel. You can
do this with any isolation transformers. If the secondaries are not
paralleled, you simply have two independent branches: the old and the new.

Just some additional stuff to consider.

Good luck!

Chuck

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