"robb" wrote in message
link.net...

"Sam Goldwasser" wrote in message
...
"robb" writes:

i have a sewing machine motor controler (wired in series with motor)
that
uses a"carbon pile element"
controler is rated at 95-145 volts and 0.7 amps
someone has claimed no troubles using the controller with a 120v - 1
amp
motor

Well, it probably does, and the speed control is probably getting hotter
than before. But there is a safety margin built in so it hasn't melted
down just yet.

Or, just because the motor says 1 A doesn't necessarily mean it draws
1 A except under heavy load.

Has he measured the current?


( this mesg was crossposted and multi-posted for which i appoligize to
those
that care)

Thanks for help Sam

no the curent has not been measured,

the question is based on the issue of a failed original 0.5 amp rated
motor
being replaced with a newer 1.0 amp rated motor and wether that is such a
good idea given rating on the controler.

so the original safety control seemed to be factored with a 0.5 amp motor
and 0.7 amp controler ?

thanks again for reply
rob



The current draw relates more to the load on the motor than the size of the
motor. It will probably be fine though, just keep an eye on the temperature.