700 Watts to run microwave using the batteries as if it
was a 12VDC microwave requires 58 Amps
700 Watts / 12 Volts = 58 Amps
Now that amps have been determined, the amps hours
need to be determined. The microwave will be used for
approximately 3 hours a day.
58 Amps * 3 hours = 174 Ah
At least a 174 Ah battery must be selected in order to use the 700 Watt microwave at
3 hours a day. However, determining a battery size is also dependent on the battery
that is able to handle repeated discharge/charge cycles.
NOTE: This is just an example. Actual quantities vary by battery capacity and rates
of discharge.
NOTE: In the example above, the user would need to be using at least the Renogy
1000W Pure Sine Wave Inverter Charger.
Grounding
The Renogy Pure Sine Wave Inverter Chargers come equipped with a grounding lug for
appropriate grounding to earth ground or to another designated ground (For example, a
metal frame of an RV). The connections to ground must be tight and against bare metal.
Whether using the inverter in a mobile application, such as an RV or in a building,
grounding is highly recommended. The recommended wire size for grounding is 8 AWG
copper wire. For more information regarding grounding, users and/or installers must
consult with the Local and National Electric Codes (NEC) for more specific grounding
regulations and suggestions as they can change per scenario.
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