[Amps] 220 amp power supply plugs

[Paul Christensen]

> I'm considering adding 220 in the shack in case I ever decided to buy
> something a little beefier output wise

Tom,

For the past fifteen years or so, I have been standardizing my own 240VAC 
amp connections with twist-lock plugs and sockets.  Home Depot carries the 
Leviton brand but Hubbell, Pass & Seymour, and others make similar 
commercial-quality hardware.

As Joe, pointed out, it would be wise to wire the shack with 4-wire 240VAC 
service in the event you purchase an older amp that requires a 
current-carrying 120 VAC neutral for the internal blower.   Home Depot sells 
both the 3 and 4-wire version of the 20 and 30-amp twist-lock style 
hardware.

-Paul, W9AC