|Forum topic by Garyb6||posted 02-07-2009 03:14 AM||982 views||0 times favorited||5 replies|
02-07-2009 03:14 AM
I am making a dust filter from an old HVAC fan. The fan is a 220V, 2A, 1/3 HP fan with 3 speeds. I am planning to buy a 4 position switch for control. I was at the hardware store today and the switch I was going to purchase was labeled 230V, 3A, 1/4 HP. I didn’t get it because of the 1/4 HP rating. I know I am a little rusty with my electrical theory but what does HP have to do with a switch? HP is calculated using Voltage, current and motor effeciency.
So I think this switch would be OK, but wanted to check with some of you smart guys out there.
-- Garyb6, “True simplicity does not reveal the tremendous effort it requires.” - Somerset Maugham