jthjr
Electrical
- Mar 26, 2004
- 8
I have moticed exhaust fan motors with HP ratings from 2 on down with service factors of 1.35. I then see return and supply fan motors with a HP rating from 7.5 to 20 with service factors at 1.15. Is there a general rule for the service factor to be higher in motors with a smaller HP? Would the application be the case?