Off-the-Grid: How Many Watts and Amps Does a Microwave Apply?

Microwave ovens are very popular kitchen appliances usually used for cooking and/or heating nutrient and beverages. Microwave ovens are also very efficient devices, which is very important in many ways.

Due to their user-friendly nature, microwave ovens are unremarkably used when camping, on boats, in the RVs, and similar, leading many people to inquire themselves, how many watts do their microwave ovens actually use?

Updated: September 7, 2020.

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Microwave Ovens - Features and Power Requirements

Near popular microwave ovens range from 500 to 800 watts for compact models and from 800 to 1800 watts for medium to large models, with an boilerplate home microwave oven requiring around 1200-1300 watts of ability.

In lodge to find out how many watts your microwave actually needs, bank check the label on the back/lower side of the microwave - sometimes at that place is a slight mismatch betwixt the unit of measurement'southward label (on the front) and the actual wattage requirement.

When being off-the-filigree (camping, line-fishing, hunting, in emergencies, etc.), having a working microwave can exist of great help - it can be used for reheating, defrosting, and even cooking and having a warm meal, tea, soup or another beverage can make a real difference.

When there is no mains power present, at that place are several options bachelor for running the microwave oven in off-the-grid situations, including:

microwave oven w300px- portable power stations,

- deep cycle bombardment combined with a good power inverter,

- power generators.

Best of all, even if your ability source is 'weaker' than your microwave oven, go along in mind that some microwave ovens come with unlike power settings (commonly 5-x power levels, sometimes even more than), allowing the user to gradually increase the power - when the ability level of your microwave oven reaches the maximum power of your power source, subtract it a little scrap and feel free to apply your microwave while monitoring ability and free energy levels of your power source.

Note: about microwave ovens feature just a timer, without the option of setting the power.

Of course, this should be avoided, if possible and a properly dimensioned ability source should exist used to power microwave ovens.

How Many Amps Does a 1200 Watt Microwave Utilize?

1200 watts is the average power level of the regular kitchen microwave oven.

When being powered past 120V, such microwave use ~10 Amps - we say '~10 Amps' since the nominal voltage of the grid varies a piffling bit, and when such microwave oven is beingness powered by a ability inverter or power generator, a voltage tin vary fifty-fifty more than.

But, keep in mind that a 1200 Watt microwave utilise ten Amps @120 volts.

In order to power such microwave at full power, 2000 watts power inverter combined with a deep-cycle battery is recommended.

With an average ability inverter efficiency of 85%, the battery must exist able to provide ~1410 watts:

1200 watts / 0.85 = ~1410 watts

Such power levels are able to provide large batteries (12V, 100Ah, or more than), some of them existence:

- WindyNation BAT-NSAP12-100: ~20 minutes, down to 10.eight volts,

- Renogy RNG-BATT-AGM12-100: ~20 minutes, down to 10.8 volts,

- Odyssey 31M-PC2150: 30+ minutes, downwards to ten.05 volts, etc.


Also, portable power generators are also used for powering various appliances, microwave ovens included.

Over again, 2000W units are recommended for powering 1200 watts microwaves - such load (~60% of the maximum running watts) will not cause operating issues for well-nigh ability generators in this class.

Likewise, such units feature fuel tanks large enough to operate for hours under such load.

Note: after the microwave oven is turned off, if there are no other appliances or loads, be sure to turn the inverters or power generators off, to conserve the free energy/fuel.


Power stations rarely feature output power of more than than g Watts, and are, as such not suitable for powering 1200 Watts microwave ovens.

However, if you have a microwave in the 500-800 Watts range, a 1000 Watts ability station will be able to power smaller and meaty microwave ovens, with the operating time depending on the energy stored at the power station battery and the bodily required ability.

Note: Portable power station is able to power even the larger microwave ovens if the output power of the microwave oven is decreased - just exist prepared for a few alarms popped-out circuit breakers when finding the 'sweet spot'.