[Boatanchors] Variac Conversion to 3 Prong Wiring

[Revcom Electronics]

Ken...

I wouldn't worry about the aluminum "fear", it is a good
conductor just not good for wiring inside of houses, esp
trailer houses with poor  installation practices, & wrong interface
connections or mixed with copper.

Stuff leading the primary to your house is more than likely
aluminum. Transistion connections either in the meter box
or your main disconnect panel.

Just be sure you have a nice shiney surface when bolting
down the ground conductor, scrape it good and use a little silicon lub to
delay any further oxidation for best connection.

Rod
K0EQH



----- Original Message -----
From: "Ken Woodside, WB8EQO" <wb8eqo at yahoo.com>
To: "Boat Anchors" <boatanchors at mailman.qth.net>
Sent: Thursday, September 07, 2006 9:29 AM
Subject: [Boatanchors] Variac Conversion to 3 Prong Wiring


> Hi to All!
>
> I have a Superior Electric Powerstat 10 amp Type 116B
> circa 1960. I would like to upgrade it to grounded
> three prong input power and three prong output power.
>
> The housing seems like it is aluminum or pot metal and
> in at least two sections.
>
> Any ideas on how to adequately and safely ground a
> unit like this? Connecting to aluminum sounds like
> trouble - reminds me of the 'aluminum house wiring'
> disaster.
>
> Did I mention that the unit seems to have quite a bit
> of corrosion of the aluminum and was used in a
> chemistry lab?
>
> Many thanks in advance.
>
> Ken - WB8EQO
>
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