Single Phase Electric Motor Magnetic Starter Question

[Modifieddriver]

I have another thread here about replacing a motor on a compressor.

I have a killer deal on a 10hp Baldor motor to replace my toasted 7.5hp Dayton.

The starter on the compressor has a plate that states is good for 40amps (FLA). The previous 7.5hp motor was 30amp, the new 10hp is 38amp.

Will the existing starter work with the larger motor?

I heard something about a possible heater change in the starter. I think the one in the starter now is marked 80 ???? I'd have to double check to be sure of the marking.

What do I need to do?

 

[AlexNGreen]

You'll be fine. Get it and go

 

[firebox40dash5]

I've got a mag starter on the shop compressor that came with the original 3PH setup, and I reused it after swapping to a 5hp 1PH. The heater coils were something like 5A shy of what they should have been, and it would cut out while trying to fill the tank. If I got it full, and didn't use much while it was refilling, it would work, but more than a few minutes and it tripped.

Lucky for me the heaviest set of that style heater coil was just right for the new motor. They were hard as hell to find and $80 for 3 even though I only needed 2, but works awesome. Best advice I can give is see if you can google (or maybe it's on a sticker somewhere) the box you have and see if what's in there is going to work.

 

[Trey T]

You'll need to size the heater strip according to the motor to protect it.