ok, heres what i have. a submersible 3phz 220v 1hp motor. it has four wires coming out of it, black, yellow , green and red. how do i check the windings with an ohm meter?
looked at those, they kinda dont apply .....its a sealed unit ?
thats what i thought too! until all the info i can find is about 6 wire and 9 wire motors. mine has 4.?
not a typical residential deep well pump. i bought this thing at an auction for cheap. it was spec'd to large for the application. ( pump curve thing). the dealer would not take it back because there is supposedly nothing wrong with it, i just wanted to check the windings before i tried to re-sell it. just for reference sake, its a myers ,predator plus, st10-12plus-2nwcove - Is this for a home pump? Three phase is usually industrial power, not normally used for residential.
thats what i thought too! until all the info i can find is about 6 wire and 9 wire motors. mine has 4.?
The six and nine lead motors are for dual voltage or star/delta configuration. Yours is a non-configurable THREE lead motor. The green lead is ground. If it is a 3 phase motor resistance will be equal on any 2 leads that you measure(all 3 equal).
A single phase well can also have 4 leads (one is ground and one is common). On a single phase motor the readings between each lead and common will differ because it will have a start winding and a run winding.
I'm doubtful it's a 3 phase pump. It's likely a 3 wire pump that requires a capacitor box above ground for operation. This is different from a 2 wire pump which has the start capacitor contained in the pump. This was done to make it easier to change the capacitor if it goes bad. You will need the cap. box to operate the pump.
100% sure its a three phase pump.
A 3 phase motor does not need neutral.3 phase would be more than 220, red, black hot, yellow neutral, green ground.
Is it like this one? (wire count)
3 HP 3 Phase Franklin Electric Submersible 4" Pump Sand Fighter 2343268802 | eBay
If less, 110/220 VAC