I have a 6000 watt allpower generator that the 12 volt breaker poped out reset it still no power replaced the avr ran for about 5 seconds then poped the 12 volt breaker again what could it be

The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism.

Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. The magnetic field is created by taking some of the generator output voltage and converting it to DC and feeding it to a coil to make an electromagnet.

When there is a small amount of magnetism left over from the last time the generator was running, it is called residual magnetism. The little bit of magnetism is enough to produce a small amount of electricity. This small amount of electricity is needed to create an even stronger electric magnet. As the engine turns this magnet moving its electric field, through the stator windings, your generator produces even more power.

When the residual magnetism is lost, the generator will produce no power at start-up. This residual magnetism can be lost naturally from not being used or from the load on your generator being connected when the generator is shut off. It can also happen from running a generator with no load for too long.

Generators need to work and it helps maintain that residual magnetism. When they are running, a load should be connected to it. It helps create an even stronger magnetic field. Before you shut it off, turn off the switch or breaker to disconnect the load. If you shut off a generator with the load connected, it can essentially drain or demagnetize the electromagnet. Try and avoid running out of fuel.

How to fix it:

There are a few methods of restoring a generator residual magnetism

12 Volt Generator Battery Method

Locate the voltage regulator for your generator.
Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.
Connect the black or white to the generator ground battery terminal.
Plug in a light, turn on the generator breaker or switch and start the motor.
Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.
Remove your wires and replace the plug. The generator should now be producing power again.

Watts to volts doesn't translate as they are different units to measure things. Watts is a power measurement while volts is what is trickling through the cable. You could have 12 volts at 6000 watts or 240 volts and 5 watts, depends on usage. If it's for a car audio amp, it will be generally 12 volts to power it which at 1200 watts means it will run at around 100 amps current according to ohmslawcalculator.com

Sounds like the alternator has failed, possibly a short or open in the windings. Similar to problem I had with my 10 KW unit. I replaced the alternator.

Volts x amps= watts.
20 amp breaker x 125 volts = 2500 watts.
However, electrician use the 80% rule, so multiply 2500 x 80% = 2000 watts.
So if you have 20 amp breaker, and 12 gauge wire, and 20 amp switch, and distance is less than 150 feet, then watt load is 2000 watts or 400 5-watt bulbs.
Keep in mind that most switches are 15 amp, and not 20 amp.
Recalculate for 15 amp switch = 1875 watts x 80% = 1500 watts or 300 5-watt bulbs.

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

Hello, First figure out what the load per leg is on your generator. Are you using the 240 Volts because this is two 120 AC volts legs and they are 120 degrees out of phase with each other.

You will need to figure what the power factor is for each phase on this generator. To figure the power/wattage by using ohm's law. Voltage times Current will give you Watts. Example: If the generator is generator 240 volts the maximum current available is about 23 amps. The maximum current for 120 volts will 46 amps. Therefore, the maximum current per 120 volt circuit is 23 amps for one circuit and 23 amps for the second 120 circuit..

I would try replacing the circuit breaker with the same amperage breaker. Also, watch what the generator load is per circuit. You can install current meter for each circuit. This will give a good indication of which circuit is pulling more load than the other circuit. GB...stewbison

You must check:

1. Are your breakers ON?
2. Measure the voltage on generator terminals.
3. If the voltage is less than 20 V AC, you should check the excitation field, rings and brushes, AVR - rectifier, cables and fuses.
4. If every thing is OK you may need to recharge the DC field with a short connection of "+" and "-" of a 12 V battery to respective field terminals when the engine is running.
5. If the AC voltage raises for a second and drops when you disconnect the battery - the excitation circuit is bad.

Great, JP. Could I ask you to please rate my assistance. Thanks very much!

Charlie

it has been through an overload (hence the protection light) and needs its breaker to be reset (look for a poped out button and push it back in) or it needs a new fuse (replace ONLY WITH THE EXACT SAME MODEL OF FUSE or it will either blow too early or too late (or not at all) when there is a surge.

well I have a special flasher unit but I believe you can put 12 volts to the brushes while it's running. That should do it.

probably your AVR card is burnt...
an AVR card is located right outside the stator...looks just like an AK-47 clip (i don't know how else to describe it)...i put a pic below this.
replace it and check again
AVR location
AVR card