Why does my Motor keep blowing Fuses and Tripping Breakers? - A GalcoTV Tech Tip | Galco

"Why does my Motor keep blowing Fuses and Tripping Breakers?", presented by Galco TV.
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[@itsno1duh]

I had a A/C tech remove a soft start device (w/o asking!) and put in a 1/2 hp motor (instead of 1/3 per specs) and immediately on firing it up it blew the double switch for the circuit and now he says the compressor has shorted out (permanently) up to these two changes the only thing not running correctly was the 1/3 hp fan motor... I say he caused an overdraw by removing the soft start and adding the higher hp motor causing the compressor failure... am I correct? Thanks for generously answering as best you can those electrical questions not in your area of employment! don't imagine I will get help and must deal with this tech again today :( Love the clearly explained tech info... Well done. UA-cam the new college of the common man... lol

[@arthurr8670]

I'm curious as to what happened. You can't just replace a motor with a large motor without first replacing the wiring to it. The issue is the larger motor uses more amps. If the circuit isn't designed for this draw on it, then the safety device trips to protect the wires. If course after replacing the wiring, you can upgrade the circuit breaker that protects the wires. Going from a 1/3 to 1/2 ho motor can increase by about 4 amps when it's running, and even more on startup. If it was a soft start kit, those are there to reduce the current on startup until the motor is up to speed.

[@3D_Printing]

Why does a sewing machine work for 3 minutes OK then trips the MCB

[@simonaurokium6258]

Can anyone help guide me to rewire my polshing motor to the extractor.

[@beerborn]

I have an Eiki Slimline 16mm projector that I use to transfer 16mm films to digital by using a 4k camcorder to record directly from the film gate of the projector. One issue of recording film to digital is that flickering is captured by the camcorder from the film gate of the projector. To solve this problem I use a voltage controller between the power souce(120v AC) to the projector and by adjusting the controller I decrease the speed of the motor of the projector and the flickering will go away. The problem I am getting is that I constantly keep blowing the 5 amp source fuse to the projector. Is there another way to regulate the ac motor speed?

[@GalcoIndustrial]

Sounds like this is a 120volt AC single phase motor, right? If so the voltage controller is the only way to control speed of the motor that we would have for a single phase type motor. However if you are controlling the line power to the entire projector at the power cord, you may have to figure out how to separate the motor power from the rest of the projector so that you are only reducing the voltage to the motor itself. This is my only suggestion as we are primarily an industrial supplier and really don't get into modifying video equipment, ok?

[@nisarnisar2597]

Peace. But on a single 18v BATTERY it works.

[@nisarnisar2597]

???