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My 6600 Generac keeps tripping the 2 30 amp main breakers after less than a minute after resetting. What's wrong?

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  • Anthony Cropper
    Anthony Cropper Aug 11, 2017

    Even running only interior lights.

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  • Master
  • 4,436 Answers

Too much of a load maybe?

Posted on Aug 11, 2017

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Posted on Jan 02, 2017

Jimster
  • 240 Answers

SOURCE: whirlpool electric dryer keeps tripping main circuit breaker

First off, be sure the pigtail is wired correctly to the back of the unit. Black and red to the outside terminals, white to the middle, green to the frame or cabinet (should be a green screw close-by). If that is ok, you probably have an issue with possibly a bad pigtail, bad outlet, wiring issue, or possibly a bad circuit breaker or breaker box. Probably going to be more of a electrical problem than a appliance problem. Good Luck!!!!

Posted on Feb 02, 2008

22yooper
  • 828 Answers

SOURCE: RV ROOF TOP AIR CONDITIONER TRIPS BREAKER

Possible low voltage condition would cause that kind of a problem. To small a cord without the ability to carry and maintain the voltage would cause a voltage drop. I would test the voltage supply and make sure it is within 10% of that required for your A/C to operate properly.

Posted on Jun 16, 2008

  • 389 Answers

SOURCE: keeps tripping the main breaker on the electrics

Sorry if this is stating the obvious, but this is a sign of an electrical fault. Specifically, what trips the main breaker is leakage to earth (ground). You need a qualified electrician.

Posted on Feb 18, 2009

dragonsthatk
  • 547 Answers

SOURCE: Pool pump breaker keeps tripping

should be a 60 amp breaker

Posted on Feb 19, 2009

thedayos
  • 57 Answers

SOURCE: My new maytag centennial electric keeps tripping

Hi Matt
I'm not sure that swapping out the breakers to higher rated ones will give you a solution so I'll throw in 2 cents to see if my advice holds true. Let's start by asking this. Is the appliance "rated" at 220 volts at 30 amps per leg. I assume this from your post as to what it has been rated. Next - How long is the "run" of wire from the junction box to the outlet where the appliance plugs in? This usually does not matter in most households but if the run is of significant length it may need a larger gage wire to support the current draw of the appliance. Lastly, and perhaps most importantly, are the lugs and wire connectors tight at the outlet, the plug, and the breaker box. A loose connection will ramp up the current fast. This is assuming the first two items were met. Tell me if any of this helps and we'll work it out from there.
Thanks.
Len

Posted on Feb 28, 2009

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I HAVE A 2 1/2 TON PACKAGE HEAT PUMP . THE60 AMP BREAKER AT THE DISCONNECT BOX KEPT TRIPPING . I DISCONNECTED THE HEAT STRIPS AND NOW THE 60 AMP BREAKER ISNT TRIPPING . WHAT IS CAUSING MY BREAKER TO T


You need to check the current rating of your heat strips. If it is more than 60 amps then you need a bigger breaker. If 60 amps or less then your heat strips are going bad. Also make sure your fan turns smoothly without any wobble.

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15 AMP breaker keeps tripping


do a amp check on the compressor and fans.That will tell you exactly what is overloading.

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Breaker installed on generator. Keeps tripping under no load after approx. 1 minute of generator running


A tripping circuit breaker is an indication of an overload. You say there is no load on the breaker - how are you making this determination? Are you using an amprobe or some other meter?

A circuit breaker with NO load shouldn't ever trip. Likewise a circuit breaker carrying up to 80% of of the current it is rated for shouldn't trip either. Circuit breakers that carry more than 80% of their load will trip - if the load remains connected long enough. This is called "duty factor" or "service factor" The greater the load is in excess of 80%, the less time that the breaker will carry it before tripping.

An example of a 100 amp breaker with different loads on it (this 100 amp value was chosen for ease of doing the math):

80 amps - never trips
85 amps - trips after 48 hours
90 amps - trips after 16 hours
95 amps - trips after 8 hours
100 amps - trips after 4 hours
105 amps - trips after a few minutes
120 amps - trips after a few seconds
150 amps - trips instantly

This is only an example to show how a certain circuit breaker might trip under a load less than the rating stamped on the body or handle.

A circuit breaker that trips with no load or a load equal to or less than 80% of its rating is most likely defective. You need an amprobe or ammeter for amp readings. If the load is found to be 80% or less, there may be an issue of harmonics that is causing the tripping. You'll need to have special equipment and qualified persons to check harmonic problems. Most harmonic problems occur when the loads are not linear device (transformers). Examples of non-linear devices are "switching" (or solid state) power supplies like those in computers.

I hope this helps and good luck. Please rate my reply. Thank you.

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1 Answer

My 200 amp braeker(main is tripped and wont reset. What should the incoming voltage be???


Don't mess with main breaker if you're not qualified.
Wires on main breaker are Hot even when main is turned off.
The only way to turn off main is to pull meter.

1) There are 2 Hot wires that connect to main breaker.
Each wire is 120Volts, and each 120V line is 'out of phase' with the other.
Two out of phase 120V lines create 240Volt circuit when they are wired together.
Read more on links below.
geno_3245_257.jpg

2) It sounds like your main breaker needs to be replaced, unless total of all circuits exceeds 160 amp. Turn off small circuit breakers and try main breaker again. If main resets, then turn small circuits back on one by one. Your main may still be bad.
http://waterheatertimer.org/How-to-replace-main-circuit-breaker.html

3) Here are more links that explain electric wiring.
http://waterheatertimer.org/B220C.html
http://waterheatertimer.org/See-inside-main-breaker-box.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on breaker or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 21, 2011 | Cutler Hammer 200 Amp Circuit Breaker...

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Heater shut down sometime in the middle of the night and now it will not turn on. I checked the breaker box and when I flipped the master switch, it came on for about a minute or two but was blowing cold...


Hi what has happened is, this is a heat pump. The main breaker keeps tripping because the compressor is shorted. I hate to give you this news, but anytime a unit keeps tripping the main breaker on a heat pump, the compressor is either locked up and drawing enough amps to trip the breaker, or it is shorted internally. This is something that you will have to call a tech out on. I am sorry to give you this news, but this is all it could be. If it came on for a minute blowing cold air, the compressor wasn't running due to it being shorted out. This is your only choice is to call someone out to check it. If this is a older unit, you may be better off replacing the outdoor unit. If not, get an estimate on a compressor change out. I wish you all the best on this, and I know this is bad news, but these things always happen at the wrong time of year. Please keep me posted.
Sincerely,
Shastalaker7
A/C, & Heating Contractor.

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Installed a generac 20kw about a year ago, ran fine untill 2 days ago. During a utility outage, generator ran for about 30 minutes and then stopped producing power while still running. All mains were still...


With the engine off, check the exciter brushes and slip rings which supply magnetic power for the alternator winding in the stator. Also, check the motor-to-alternator mechanical coupling. Check the breakers for tripping. To service beyond this point requires a schematic of the alternator, a voltmeter, plus knowledge of what the schematic is telling you. Good luck!

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1 Answer

One of 2 circut resets keeps tripping on our Generac generator


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.

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