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Re: [TCML] Idle musings about surge suppressors

It might be worth considering what happens to these things when they DO have
to clamp a surge.  Is your construction material going to catch fire from
the heat generated by the MOV?


On Mon, Mar 15, 2010 at 12:26 PM, Reverend Fuzzy

> Most of them are just that... MOV's  When I found that out, I built my own
> with 3 heavy-duty MOV's on a piece of perfboard, then
> covered the whole board in a chunk of heat-shrink tubing... wound up with a
> module as big around as a small matchbox, with one red,
> one black, and one green wire coming out of the end... total cost, under
> $10.
> (black to phase A, red to phase B, green to neutral/ground bus bar.)
> > -----Original Message-----
> > I wonder if maybe they were referring to the whole-house units which
> simply plug into your load center
> > to allegedly protect everything from spikes.  They use 2 slots, 1 for
> each pole of the 240VAC.  I have
> > installed a 100amp sub panel in my garage and was considering putting one
> in there as that is where I
> > will power most of my experiments from, and the prices have dropped to
> only around 60 bucks from $100.
> > Has anyone taken one of these units apart to see what's inside?  If it's
> just MOVs then I won't waste
> > my moola on one.
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