Question about Grundfos MQ3-45 1 HP Pressure Booster Pump

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Breaker trips when pump is turned on

When i plug the pump in it trips the breaker. The pump is on a dedicated circuit so its not a problem of a circuit overload.

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jasbo

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Make sure the amperage on the motor doesn't need more than the breaker you have. it should tell you on the name palte or the manual how many amps it uses under a workload. if it's worked before this, then maybe the motor is seizing or has a short.

Posted on Aug 12, 2009

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Amana model lga60aw Dryer tripping circuit breaker
Is the dryer gas or electric? Does it plug into a 110Volt outlet or a 220Volt outlet? Does it trip the circuit breaker immediately or will it run for a while and then trip the breaker? If it is tripping immediately then there is a short inside the unit. If it takes a while to trip the breaker it can be that the outlet you are using is not a dedicated line and has other circuits connected to it. If that's the case you are overloading the breaker and causing it to shut down. If it is a dedicated line that you are plugged into then something inside the unit is heating up when its in use and overloading the circuit breaker. Then the unit needs service.

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My lights dim and microwave fan slows when turning on toaster
ABSOLUTE FIRE DANGER
Do NOT keep overloading circuit until electric is brought up to code.

Voltage drop.
Your breaker is rated more amps than the wire ... so wire is getting hot ... and appliances are starved for power.
The breaker should trip, but somebody has put in larger breaker without installing larger wire.
So wire is getting hot as appliances draw more power than wire can safely carry ... but the breaker should trip when wire gets hot ... but breaker is not tripping because it is oversized.
http://waterheatertimer.org/Color-codewire.html
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

Microwave should be on dedicated 20 amp circuit ... which means 1 breaker supplies voltage to microwave and nothing else. This is code today.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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Lg microwave oven trips circuit breaker
The magnetron probably has a partial short pulling more current than normal as it runs, the other two items that give trouble is the high voltage diode, "sometimes cracks" to the high voltage capacitor, "usually shorts"

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I have grandfos circulator pump the wiring was hooked to incoming line not cir. line is this ok
That is still okey, however, it would have been advisable to hooked it to its own cir. line. I assumed that the cir. line is dedicated to the grundfos pump complete with its own circuit breaker or fuse cutout.
Since you are just asking if it is okey, well it is. But
the line must be going to a circuit breaker (20 Amp trip), for 220 volt line; and 40 Amp trip for 110 volt line
before it goes to the grundfos pump. Just use the circuit breaker or fuse from the cir. line. And take the original cir. line off from where this is connected, and keep it for future use.

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Ground fault trips once turned on.
Either the receptical is wired wrong, or the line safety limit has been exceeded(example If you have a 20 amp breaker and the draw on that breaker exceeds 20 amps the breaker will trip.) You either have to put the refrigerator on a dedicated circuit or trace the circuit that it is on to see if the total load on that circuit is greater than the circuit limit. The simplest being , put the refrigerator on its own circuit.

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1 Answer

Fridge keeps tripping the circuit breaker
Unless there is a dedicated circuit of 20 amps to the refrigerator this will continue to happen When your refrigerator goes into defrost and other things like lights fans air conditioners are on the same circuit it will have no choice to not trip the breaker. Try this turn the breaker off and how may thing in your house stop working? You need a 20 AMP circuit or this will possibly damage the compressor or weaken the breaker because it has tripped so many time. Thanks, Please rate my solution, I have done this work for 30 years. Thanks, Sea Breeze
If you have more questions or need help feel free to let me know, Thanks, Sea Breeze
appliancepartsse@yahoo.com

http://servicepartstec.blogspot.com/

http://appliancepartsse.blogspot.com

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Chek the high voltage capacitor and the diode . If one of them are short there is a chance for tripping the breaker

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The past Few days the microwave would trip the breaker. today I went to use it and it worked for 30 seconds when I checked what I was heating and turned it bakc on and it would not work
Microwaves that are either built in, a part of the oven, or over the range are on a dedicated circuit by law. This means nothing else could have tripped that breaker but the microwave.
If it has a problem severe enough to trip a 20 amp breaker several times, it is only getting worse each time you reset the breaker and turn it on.
There is a possible chance of fire. I recommend you turn the circuit breaker off and replace the microwave. Is it a plug in, or over the range type?

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