enireh
Senior Member
- Location
- Canyon Lake,TX
what is the difference in a dimmer switch and a fan control switch? how is it a dimmer switch will harm a fan motor
thank you~
thank you~
dimmer, fan control
- Thread starter enireh
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I believe it has to do with the rating but you don't want to use a standard dimmer anyway as the fan will hum. A speed control switch is what you want
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
A standard lighting dimmer will:
1. Not handle a high power inductive load.
2. Not hit the correct turn on points (firing angles) with a two wire connection.
3. Not allow you to set a minimum output to prevent burning out the motor when the selected voltage is too low to run the motor properly.
And the sharp inrush at turn on in each half cycle (leading edge control) will cause hum and may damage the motor.
Really old speed switches made different winding connections to the motor.
1. Not handle a high power inductive load.
2. Not hit the correct turn on points (firing angles) with a two wire connection.
3. Not allow you to set a minimum output to prevent burning out the motor when the selected voltage is too low to run the motor properly.
And the sharp inrush at turn on in each half cycle (leading edge control) will cause hum and may damage the motor.
Really old speed switches made different winding connections to the motor.
- Status