Solar Load Calculations (Varies with Applications)

Choosing the right battery

For example:

EQUIPMENT
LOADING
.
Est. USAGE IN HOURS
WATT HOURS
Refridgerator
40
x
10.00
400
Interior Lights
20
x
4.00
80
Winch
90
x
0.2
18
.
.
.
TOTAL WATT HOURS
498

Now divide the total watt hours by the voltage to obtain the amp. hours.

For example: 498 watt hours divided by 12 volts = 41.5 amp. hours

To allow for faults that may occur to systems allow 30% safety margin.

For example: Estimated amp. hours plus 30% 41.5 + 12.45 = 53.95 amp. hours.

Power Demand Worksheet

Lighting

LOCATION

VOLTAGE 12-24-240
WATTS
USAGE PER DAY
DAYS PER WEEK
POWER CONSUMPTION PER DAY (WATT HOURS)
Bedroom 1
.
.
.
.
.
Bedroom 2
.
.
.
.
.
Bedroom 3
.
.
.
.
.
Bedroom 4
.
.
.
.
.
Bathroom
.
.
.
.
.
Hall
.
.
.
.
.
Kitchen
.
.
.
.
.
Dining Room
.
.
.
.
.
Family Room
.
.
.
.
.
Outside Lights
.
.
.
.
.
Others
.
.
.
.
.
Power Consumption (lights)
.
.
.
.
.

Appliances

.
Voltage 12-24-240
Amperage or Watts
Usage per day (Hours)
Days per week
Power Consumption per day (watt hours)
Television
.
.
.
.
.
Radio
.
.
.
.
.
Stereo
.
.
.
.
.
Refridgerator
.
.
.
.
.
Freezer
.
.
.
.
.
Washing Machine
.
.
.
.
.
Sewing Machine
.
.
.
.
.
Iron
.
.
.
.
.
Vacuum Cleaner
.
.
.
.
.
Electric Blanket
.
.
.
.
.
Food Mixer
.
.
.
.
.
Toaster
.
.
.
.
.
Microwave
.
.
.
.
.
Water Pump
.
.
.
.
.
Pool Pump
.
.
.
.
.
Power Tools
.
.
.
.
.
Others
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Power Consumption (Appliances)
.
.
.
.
.
TOTAL POWER CONSUMPTION
.
.
.
.
.

For expert advice on your system, ask us for a free consultation.

For ordering and delivery details please call (07) 5499 1129 or e-mail us now

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