100 amp feeder breaker . When running air cond, water heater, and elec dryer, the 100 amp feeder breaker trips and won't reset for 10-15 minutes (cooling down?).Loose connection? Premature tripping?

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.

Allen Neal

• 359 Answers
• Posted on Feb 07, 2009

SOURCE: Main breaker tripping

replacing the main is a possibility and i saw someone suggestion to ck load on each leg of power , also a good idea but one thing i have also seen do this is a loose or corroded connection in the meter base or disconnect which causes a process called electrolysis that is a flaking away of the conductor itself in the meter base or disconnect feeding the panel main breaker and causing heat build up internal to breaker and making it trip but if you replace the main that is the time to check all these connection and it would not hurt to apply a little no lock or some other brand of oxidation inhibitor

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

SOURCE: Torpedo heater runs for a minute or two then the breaker trips.

You can test the photocell by hooking up a ohm meter on thr rx1k scale. Photo cell should be out of the heater.Hold photocell up to a light bulb,with light on resistance of photocell should drop to 0 to 100 ohms.Holding finger over the photcell and blocking the light the resistance should go up to the maximum resistance

SOURCE: Circuit breaker trips after 10 minutes

could be a weak breaker,or poor high resistance connection from panel to dryer plug, then have someone check the current draw on the dryer while operating and see if it's within specs of the machine tag, if it's higher than that you may have a defective motor or heating element to case causing a higher than normal current draw