Jeffrey Angus wrote:

On 10/16/2011 8:05 PM, Jamie wrote:

Why don't you use a simple step up transformer for the coil?
you won't need a large one.


Um, however briefly, the transformer needs to supply
5.2 amps at 480 volts to successfully energize the coil.

That's 2500 VA Even a 500 VA control transformer that I have
sags too much to properly actuate the transfer switch.

Jeff-1.0

I find it hard to believe that coil is using that much? Are you
sure it's in proper working order? We have 500 amp contactors with
120V coils that only require about 2 amps to pull in. Something just
does not sound right, but what ever.



Jamie