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Old 05-24-2016, 09:27 PM   #1
Join Date: May 2016
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Generator Question

New to forum and to serious RV'ing. Have been using a simple pop-up for years but ready to get serious with a new Roo 23WS. Want to be able to camp off the grid so looking for a generator/invertor. Unit has 13500BTU A/C. Want to be able to run A/C, and microwave, and TV with lights. Do you think two 2000 watt hooked in parallel is the way to go?

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Old 05-24-2016, 09:53 PM   #2
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Location: Mountain Foothills of Southern Alberta
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I have two Champion 2000's parallel and they run my 15k AC with no problem. Will not start AC (high head pressure) if microwave is running.


2007 Surveyor SV230
- 200 Watts Solar/MPPT Controller - 230 AH Battery Bank - 600 watt PSW Inverter - (2) 2000 watt Inverter Generators - LED Lighting
Boon Docking 99% of the time.
2009 F150 - 5.4 Litre - Tow Package
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Old 05-24-2016, 09:59 PM   #3
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If you run all at same time, there is a possibility you may have trouble and here is why:

2000 watt generators such as the Champion are rated for 1700 watts continuous and 2 will give you 3400 watts. For every 1000 feet in altitude over sea level expect to lose 3% in power generation capacity. Expect to lose more than 3% if you don't reject for high altitude.

RV A/C uses anywhere from 1500 to 2000 watts continuous with 3000 watts needed for starting

Microwave: Plan on 1200 watts for it.

Converter: I'm assuming you have at least a 40 amp converter. If batteries are low expect at least a 20 amp charge on them which is about 275 watts out and 300 watts if not more due to inefficiencies in power conversion.

Hot water heater cycling on electricity: 1200-1500 watts

Fridge on A/C 300 watts or so for the heating element on fridge-Yes, fridge cools on heat...weird.

TV: 30 to 100 watts

Lighting: Get LED lights. Incandescents burn hot and use a lot of electricity.

If you are judicious in your use of power you should be ok. We don't run microwave when running a/c. We run fridge on propane instead of ac generator power. We run hot water heater on propane instead of a/c.
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Old 05-24-2016, 10:16 PM   #4
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Location: Pensacola, FL
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Any RV with 30 amp (3600 watts) shore power requires power management. It will just not support all the various electrical loads at one time. The same applies to 4000 watts of genny power.

Get to know what you can run together and a pair of 2000 watt units in parallel will be fine.

I get by well with a single 3000 watt Honda inverter genny because my A/C is only 10,000 BTU.
2015 T12RBST Flagstaff Hardside
2008 Itasca Meridian 37H
Disclaimer: The actual value of my "Two Cents" of advice varies just like a bitcoin.
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