Curcuit breaker goes off at reset

Make sure the power draw on the AC doesn't exceed 3000 watts. 2300 running, 3000 surge watts. You may have an AC problem developing. The circuit breaker on the generator seems weaker when you reset it because of internal heat. Let the breaker cool a while before resetting.

How long has it been since you have the new motor installed? Did it work after the job was completed? Very possible that the starter circuit has failed, usually when it comes on and runs but overheats and stops, the starter and run circuits are both engaged and that causes it to overheat. If you can read the wiring diagram on the motor and make sure it it correctly wired, you may save it if it is a simple loose wire. Otherwise it sounds like you will have to have whoever changed it come back and do a warranty repair.

1) A circuit breaker will not reset if breaker is hot, or if there is a short to ground.

2) Hot breaker: If circuit is pulling more amps than the breaker rating, or if breaker is loose on the busbar, then breaker gets hot, and trips.
3) Volts x amps = watts. Add up wattage of everything on breaker and divide by 120Volts and that gives you amps.
If your breaker is 15 amps, the SAFE maximum is 80% or 12 amps.

4) If breaker is loose, you can smell burning and hear crackling sound. Jiggle the breaker around and listen for crackling.
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

5) If there was a short somewhere on the breaker circuit, the breaker will trip.
When you unpluged each device and then the breaker was reset, then that says problem is probably NOT the wiring or breaker.
The problem was probably inside one of the devices that was plugged in.

6) If breaker trips again, unplug each device one at a time, and then try to reset breaker after each unplug to see if you can isolate suspected device.

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You can buy an inexpensive GFCI tester for as little as $10-$12. A better one with several mv settings will cost you a bit more. This way you can test this circuit and even GFCI receptacles. Then you'll know for sure if your breaker is working.

The circuit is protected by the 15 amp breaker. That's what matters, the wire size and the breaker feeding it. It's OK to have a 20 amp recepticle fed by a 15 amp breaker.

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The circuit breaker is located on the base of the chair. It is a small button about half the size of a dime, and it often has a flexible cover over it. If it is tripped, you will feel a click when you push it as it resets.

It's possible that the first breaker that you said does not trip - it could be that breaker is failing to trip on a bad circuit. That is, it could be you have a bad circuit but that first breaker is not detecting it and pretends everything is OK. If your new breaker trips on the first breaker's circuit, the curcuit it probably bad and the breaker in not working properly. The most common problem for failed circuits is a stray ground wire in a box somewhere in the curcuit resting against a hot or neutral wire. You'll have to take apart every connection on that curcuit to find it. Not fun.

GFI devices are prone to degrade over time. Also, when used outdoors there are additional moisture issues that may cause sufficient current leakage to trip the breaker.

I had a similar problem this Spring. I was using a 20 amp GFI "master" outlet that protected two additional outlets 'downstream' of it (wired to the 'load' terminals on the GFI outlet- I'd have the check the doc. to see what terminology was used here). The pump was plugged into one of the downstream outlets.

Replacing the GFI seemed to solve the problem. I did ante up $20 for an 'outdoor' model of the 20 amp GFI unit, several bucks more than the standard 'indoor' unit - have no ideal if that represented additional value or not.

Note also, that this is the third such pump I have used for my pool cover. The other two failed to come on at all after about a year's use. The mfg replaced them under warranty (I may have had to send back the old pump - I forget!).

Curtis

If it's tripping a breaker that usually means there is to high of an amp draw on that curcuit.

Are you plugging more things into that particular curciut (or just different but higher amp draw items) than you did last year?

It's also possible that one of the items plugged into that curcuit is wearing out and drawing more amps than before.

If you have an amp meter, plug everything back up just the way it was when you were having problems. Check the main wire going to that curcuit. (right at the breaker)

If your amp draw is greater or nearly the same as the amprating of that particular circuit, then thats your problem.
To many things/to high amp draw on one circuit.

If it is not near the amp rating, and you are getting proper voltage to the breaker, then I would replace that breaker.

Does this happen every time or once in a while? If it happens everytime, I would guess there is a shorted spot in the timer. If you can put it into the spin cycle manually, then the motor is not shorted. It will be hard to diagnose it from long distance, but if it is tripping the house breaker it has a dead short somewhere. If it only happens sometimes, check to see what else is on the circuit that might be running at the same time. It pulls the most amps when it goes into spin, spiking around 16-20 amps. If you have other things running on a 20 or 30 amp breaker it could just be the curcuit is overloaded at that point or the breaker is weak. If we can narrow it down to the timer, it is a pretty simple repair, but some of the timers are pretty expensive. Post back with the exact model number if you need more help.