Danger Will Robinson! An AUTOTRANSFORMER is most definitely NOT isolated.
A variac is a variable autotransformer. one needs to feed the varic
FROM a real two winding transformer to make it safe.
Curt
KU8L
Bob Jackson wrote:
In some corners, they're also called "autotransformers". My 5A one has
served me well for anything I've ever tackled or will tackle. I keep
the variac plugged into it.
Bob AG5X
------------------------------------------------------------------------
*From:* Nigel Gunn G8IFF/W8IFF <[email protected]>
*Cc:* Drake Forum <[email protected]>
*Sent:* Tue, February 1, 2011 5:49:14 PM
*Subject:* Re: [Drakelist] Test equipment and getting started
Because the original poster said he wanted to use a GCFI.
It's not needed with a double wound transformer.
Do building sites use isolating transformers for power tools?
In Europe they have to use a 55-0-55V transformer for portable tools
by law.
I always got my isolating transformers from a builders supply depot.
On 01-Feb-11 23:45, [email protected] <mailto:[email protected]> wrote:
> Why is it recommended to use the GCFI?
> 73,
> Lee
>
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