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Why ceiling fan in class rooms does not rotates on single phase supply?
Wiki User
∙ 12y ago
Most ceiling fans are single phase. There are a number of possibilities that can easily be determined by an electrician.
- The breaker is tripped (Easy to check)
- The switch is bad (This could be a normal on/off switch or a special fan control switch that sends commands to a control unit inside fan.) (Use a meter to see if there is voltage on the fan side of the switch with a meter)
- Wiring from the switch to the fan could be open (See if there is voltage at the fan with a meter)
- The motor for the fan could be bad (Check the resistance across the windings with and Ohm Meter and make sure the winding is not Open)
- If there is a control board in the fan it could be bad (If all else fails, this may be the problem. I just replaced 5 such bad controllers on Casablanca fans with W-32 switch)
Wiki User
∙ 12y ago
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