How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Mike G. Your Own Question
Mike G.
Mike G., Master Electrician
Category: Electrical
Satisfied Customers: 7599
Experience:  Proven Professional 48 years Experience
Type Your Electrical Question Here...
Mike G. is online now
A new question is answered every 9 seconds

Bill H. here. I'm working with a friends paint booth. the

Customer Question

Hi Mike - Bill H. here. I'm working with a friends paint booth. the exhaust system is run by a Smith & Jones 2HP, #67842,
model D1545T2S4C. It is 115 / 230V and draws 17.2/8.7 amps . He wants me to put a rheostat speed control so he can slow the fan down for certain procedures.
The pulley ratios are 1:1 and it now runs at 1800RPM on110V.
I think a decent rheostat might cost more than the motor? Would the rheostat burn out the motor or vice versa? Can it even be done? If so what kind of rheostat should I use and would it work if we convert the motor for 220V?
Anjy help here will be greatly appreciated.
Thanks - Bill
Submitted: 1 year ago.
Category: Electrical
Expert:  Mike G. replied 1 year ago.

Hi, I'm Mike G and I'll be glad to assist you. Unfortunately you won't be able to varie the speed of the motor. To be able to a muliti speed motor would be required. Might consider a damper on the intake duct as an alternative.