Samlexpower PSE-24100A Owner's Manual - page 9
SELECTING THE OPTIMUM POWER SOURCE
Use a Deep Cycle Battery for powering an inverter as this type of battery is designed
to deliver large currents for long durations. Do not use an automotive starter battery
because these batteries are designed with thinner plates to provide large current for a
very short duration to crank the engine. They are not designed to provide large
currents for long durations.
The capacity of a battery is expressed in Ampere Hours (AH) or in Reserve Capacity
(RC) in minutes. Multiply the Reserve Capacity in minutes by 0.3 to get Ampere Hour
capacity ( e.g. RC of 166 minutes = 166 x 0.3 AH or approx. 50 AH )
The approximate current drawn in Amperes by an inverter from a 24 V battery is
determined by dividing the output power drawn from the inverter by 20. For example if
the full 2500 Watts of output power is drawn from PSE-24250A inverter, the battery will
be required to deliver 125 Amperes ( 2500 Watts divided by 20 = 125 Amperes )
Example for determining battery capacity is given below:
Let us say that it is required to run a 2500-Watt load from PSE-24250A inverter for 2
hours.
Current required to be delivered by the battery = 2500 Watts divided by 20 = 125
Amps
AH required to be delivered by the battery = 125 Amps x 2 Hours = 250 AH
Hence, the AH capacity of the battery should be more than 250 AH ( or 250 divided
by 0.3 = 833 RC )
Use 4 Type 8D 12 V batteries in series-parallel connection to get 400 AH capacity
Note:
The AH capacity can be increased by connecting 2 or more batteries in parallel. For
example, if 4 type 8D , 12 V batteries ( Each 8 D is 12V, 200 AH ) are connected in
series-parallel connections, the net capacity will be 200 AH x 2 = 400 AH at 24V.
When using high capacity inverter in an automobile, do not use the starter battery but
an auxiliary deep cycle battery as explained above. Also, if the starter battery is used
and it gets discharged while powering a load connected to the inverter, it may not be
able to start the automobile engine.
USING PROPER WIRE CABLE SIZES
For safe and proper operation of the inverter, connect the inverter ot the power source
with the thickest wire available and in the shortest length practical.
PSE-24100A (1000 Watt) and PSE-24150A (1500 Watt) Models.
When the inverter and the battery are set up within four feet of each other, use a
minimum of #4 gauge wire to make the connections. Within four to six feet, use a
minimum of #2 gauge wire. At distances of more than six feet, use #0 gauge wire.
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