guys, I have to run a 5k btu window unit and a 1k hps on one breaker, what amp breaker should I be using? thank you kindly for any help
Q is, what is your AC rated for in amps?
what size wire is on the breaker now?
those AC's uaually have a big draw when they start up.
the breaker and wire need to be rated for use together
if your going w/30A breaker you need to use a #10 wire.
20A breaker---> #12 wire
what size wire do currently have?.
it should be a #12, if so your good with a 20A breaker and can run a steady 16 amp load.
a 1000w mag ballast draws 9A
I doubt your gonna get the 5000btu AC to go unless it draws 7A or less
AND
those AC's usually have a big draw when they start up more than their rating.
BUT
here's an idea, most 1KW ballasts can run on 220V
running on 220v you knock the amperage draw down in 1/2 to 4.5ish or so
plus your equipment will run a bit more efficient.