Question about Coleman Powermate Premium Plus 6250W Portable Generator

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My generator starts but it will not power the ac,

My generator starts but it will not power coach no air, or mirco wave

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Generator starts but will not put out power

Posted on Oct 28, 2009

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You dont say whether this is a newly developed problem or an unexpected one. Has it ever powered these items? If yes, then the unit needs to be checked out that it has not got bad brushes on the generators commutator.

1) check the wattage required to run each one. and compare it to the watts output of the Gen Set Microwaves are usually about 600-1000W and most generators of a portable nature are about 600W 25amps

A/C require a generator capable of 1KVA to power any decent size A/C other than a small window unit for a small caravan and certainly not a Mwave A/C at thye same time without showing signs of variant output( dimming)

Perhaps more information is needed here.

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Posted on Sep 13, 2009


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Your question doesn't make sense as it is written, but if the real question is what size generator do you need to start the air conditioner I might offer the following....

Look on the air conditioner product label and you will find information concerning the supply voltage and current. This is a 2 ton unit and it probably requires 220VAC power. Also on the label will be a value for the maximum OPD (over current protection device). This indicates the maximum fuse or circuit breaker that can be installed in the power feeder line for the air conditioner. You will need a generator that is capable of supplying this amount of current during the start up of the air conditioner. The value is usually about 2-1/2 times the normal operating current that the generator will need to supply continuously. This is because the air conditioner is full of motors that draw a lot of current when starting up. If the generator can't supply sufficient start up current, the motors will not start and the AC will not operate. As a result, the generator size is usually relatively large in comparison to the actual size required to keep the AC running after start up. This is also why AC units are not typically powered from generator power. Good Luck!

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Winnabego 2006 how to turn on TV, using generator

Start generator, allow a few minutes to warm up.

If everything works as it should, you should now have AC power in the coach (look at microwave, air conditioner, etc). If not, then start checking the breakers.

If the breakers are on, then go to the generator compartment, open it, and check the breakers on the generator itself. If those are on, then your transfer switch has likely failed.

Some appliances don't like the power that is produced by a generator due to the unsteady nature of frequency (it starts high, and drops as loads are added). If the TV works on shore power, and not when generator is powering the coach (and other 120vac appliances work), this is probably what is going on.

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Your generator may be putting out a square wave instead of a true sinusoidal (sine) wave.

There is usually a circuit in the microwave which monitors the AC line for timing purposes, and a square wave may not be interpreted correctly.

I would consult the manual or contact the manufacturer or installer.

We're happy to help and we appreciate your thoughtful rating of our answer.

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Are you still under warranty with your RV? If so, take your RV back to them and try to get this problem fixed through them. You know more about electronics than I do (LOL) however, I do believe the RV sales/repair should be taking care of this issue for you.

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