Running a motor at overvoltage

[Sparkyman]

I've looked in FAQ and tried Search but this must have been covered before so if one of you kind people could point me to the answer it would be appreciated.

What exactly happens if you connect a 110V motor (say a small fan) to a 240V supply, and why?

Thanks

 

[bklauba]

Keith,

Your buddy has to look at the bright side: At least he this didn't happen on his honeymoon. (Sorry Keith, I can't let you forget that story.)

BK

 

[itsmoked]

LOL

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[bgkelly]

most conventional induction motors are most efficient at about 5% above rated voltage. If you continue to increase the voltage, the iron saturates and the current goes up very fast. in the case mentioned the current will be several times the rated current and if you are lucky and the correct size overcurrent protection is included, it will trip and protect the motor, otherwise smoke.