Question about Coleman 9330E715 - Mach Ceiling Assembly White 9330E715

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What size generator is required to run this unit as well as a heater?

It is in a small bumper pull box trailer with a heater and 3 electrical outlets for running laptops

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Posted on Jan 02, 2017

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SOURCE: how much generator do I need?

On average, a rooftop unit with pull 14 to 16 amps depending on the ambient temperature. I am not sure how big your microwave is but we will assume 1000W. The TV really doesn't pull that much. So, you have 16 amps at the Air Conditioner, 8.5 Amps at the Microwave and we will say 5 amps at the TV. Lets not forgot the converter for the coach which pulls 3 to 5 amps on average. Add all of these amps together and you have 34.5 on the high end. To get the size Wattage of generator needed to run 34.5 amps, you take 34.5 and multiple it by the electricity source, in your case 120V. That means that you have 4,140 Watts of power to be used max. I think that with a 4000 watt generator, you will be fine. You may be able to go a little bit smaller if your microwave is not that large. To find the amps of the microwave that you have, take the wattage and divide it by 120. That will give the average amps that it pulls while running.

Hope this helps,


Posted on Jul 04, 2009


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Generator had been running for 3 hours with a/c and refrigerator and lights (on concession trailer)when we experienced a loss

the unit has gone into over load
The total power requirement has exceed the output of the generator
for example if the generator is a 2.500 kw or kva then it will generate well at 1.8 kva or kw but it will not run forever at 2.5 kva -kw
When a ac is running the power requirement will be constant on the generator and with the fridge as well then the load will be at the maximum out put of the unit.
when the fridge starts again the extra load will exceed the max out put of the generator and it will slow down ( lights dimming ) and eventually go into overload mode
have an accredited electrician calculate your maximum load requirement for an external power supply and then get a unit that is at least 15.. kva kw better that required
generally fridges use 1000watts , ac conditions will draw over 3000watts and any thing else adds up . I am guessing that your generator is only 2500 unit

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How do I get a wire diagram for a 32 foot 93 Fleetwood travel trailer. original owner, all wires out so I need to put all new wiring in from breaker box back

Hi Cayla

Without knowing the model of your trailer, I've found a link (see below) to Fleetwood RV's support center. I hope this points you in the right direction and you get some joy.


Fleetwood RV Parts and Service

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We have a rheem 71 40D B and it is leaking, what is a good replacement unit for mobile home

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What size generator do you need to run 19100 watts

if you're talking RESISTIVE (like incandescent light bulbs and radiant electric heaters), then you need about a 20KW generator. If you're talking REACTIVE (like electric motors and fluorescent lights), then you need a 40KW to 100KW generator - higher if you're starting all the motors at once, lower if you're stage-starting the motors. If you're talking about a mix of resistive and reactive loads, then you'll need something between 20KW and 100KW depending upon the mix.

If you're talking about MAXIMUM 19100W but realistically only a small part of that load is actually likely to be required at any given moment, then you can use a much smaller generator. For example, my own house has a 100A 240V breaker panel, for a total capacity of 24KW. I can realistically run what I REQUIRE from a 3.5KW generator, though, by intelligent load switching.

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1 Answer

Can I run the hot water heater with a generator

Ordinary electric water heater can run on any voltage from any direction (excluding volt/amp ratings below what can heat element coil).

Voltages include single-phase, split phase, and 3-phase residential/commercial voltages with either 50 or 60 Hz.

Install line fuse.
30 amp fuse would be required to prevent wires from overheating, and eliminate fire hazard.

This information does NOT apply to energy-smart electric water heater with box on top of heater, or newer energy smart with electronics, or to hybrid water heaters, or heat pump water heaters with delicate electronic circuitry.

Why it works like this:
Ordinary electric water heater thermostats are mechanical bi-metal switches and respond to tank temperature, and are not operated by electricity.
Ordinary generic elecrtic water heater thermostats switch electricity on-off using mechanical bi-metal switch.
Heat elements are simple coil of thermal wire that gets hot when voltage is applied.
The element will get hot when power is applied.

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Recently purchased a 4400W generator to operate travel trailer primarily and on occasion my ac unit. Connected the generator to the travel trailer, then ran the a/c, everything going well, then the circuit...

What size circuit breaker is on the generator that is tripping? You'll need a 20amp for AC alone, then consider other things that are drawing current when RV plugged in like , converter, fridge etc that may be drawing current at same time. Make sure fridge is on propane, as well as water heater if you have electric element option on water heater. AC may only draw 12-15 amps when running if good and clean and wired properly, but will draw 17-18 amps when compressor kicks in. Perhaps generator not designed for that surge?

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1 Answer

Have a 1998 wild travel trailer and need to

Hello. I can help you. Your gas furnace only needed a small amount of electrical power to operate. The electric heater on the other hand will need a lot more power and most likely will need 220 volts as opposed to 110 volts for the gas furnace. Therefore, a new line to feed your electric heater, sized appropriately will have to be run from the electrical panel to the electric heater. I recommend that you have a pro do this wiring job for you as there is no room for error. Good luck with it.

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Need electral requirements to size a generator for Duo-Therm A/C unit model 57915.531

A Duo-Therm 13.5BTU Brisk Air unit will pull 14 - 16 amps on average in High/Cool mode. Depending on the ambient temperature. Since the unit is 120VAC, then we know that the unit is going to need at least 1920Watts to run. There are other things in the unit that will affect the generator as well. TV's, Microwave and Converter all pull amperage on the generator. It is safe to say that if you are using a 4000Watt Generator, then you will be fine. If it is just for the AC and nothing else, then a 2500Watt generator is more than sufficient.



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1 Answer

Coleman 5KW gen motor shuts down when A/C switch turned on

Sounds like a problem with the wiring of the outlets after the circuit breaksr. Take apart the outlet box and have a look for burned or broken wires, melted outlets, and/or small critters stuck in the wiring.
I recently had to repair a generator that had its voltage regulator taken out by a frog!

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