Manual

Example

A Microwave oven

= 700 Watts

12V battery bank

700 Watts to run microwave oven 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 amp-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.

Load Operation = 3 hours

Determine the amount of Watts (Amps * Volts) for the load, and how long the load

needs to operate—

each electrical appliance has technical specificationsindicating the

watts, or the volts and amps required for operation.

Estimate load run-time—

Battery size depends on load watts and run-time. Most loads

are not constant, so estimation is very important.

Utilize the formula Watts = Volts * Amps

Determine Amps used for how many hours – Amp-hour (Ah)

Sizing a Battery Bank

Grounding

For this Renogy inverter, the battery bank will be 12 volts direct current (12 VDC)

This is just an example. Actual quantities vary by battery capacity and rates of

discharge.

NOTE

To power the microwave in the example, the user may need to us an inverter that is

1400W or more depending on surge and power factor..

NOTE

Grounding for the PCL Inverter-chargers could be to 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.