Solar Powered Repeater System
Calculate Your Total Daily Amp Hour usage
Calculate Your Total Daily Amp Hour usage
Calculate Your Total Daily Amp Hour usage
Calculate Your Total Daily Amp Hour usage
AC Loads
List AC load items
Quantity
X
Watts
X Hrs/week = Wh/week
Total Wh/week
-
①
DC watt hours per week. Multiply line
①
by 1.15 to correct for inverter loss.
-
②
Inverter DC input voltage; This is DC system voltage.
12
-
③
Divide line
②
by line
③
. This is total amp hours per week used by AC loads.
-
④
DC Loads
List DC load items
Quantity
X
Watts
X Hrs/week = Wh/week
Total Wh/week
-
⑤
DC system voltage.
12
-
⑥
Total amp hours per week used by DC loads. Divide line
⑤
by line
⑥
.
-
⑦
Total amp hours per week used by AC loads from line
④
-
⑧
Add lines
⑦
and
⑧
. This is total amp hours per week used by all loads.
-
⑨
Divide line
⑨
by 7 days. This is total average amp hours per day.
Daily Amp Hour Usage =
-
⑩
54
Calculate how many Solar Panels you will need
Calculate how many Solar Panels you will need
Calculate how many Solar Panels you will need
Calculate how many Solar Panels you will need
Total average amp hours per day
-
①
Divide line
①
by 0.8 to compensate for loss from battery charge/discharge
-
②
Average sun hours per day in your area
-
③
Divide line
②
by line
③
. for total amps required
-
④
Multiply line
④
by 1.15 to correct for generating loss.
-
⑤
Continuous non-sunshine days in your area
-
⑥
Multiply line
⑤
and line
⑥
for total solar array amps required.
-
⑦
Peak amps of solar module used
-
⑧
Total number of solar modules in parallel. Divide line
⑦
by
⑧
.
-
⑨
Round off to the next highest whole number.
Number of Solar Panels=
-
⑩
Calculate what size of Batteries you will need
Calculate what size of Batteries you will need
Calculate what size of Batteries you will need
Calculate what size of Batteries you will need
Total average amp hours per day
-
①
Divide line
①
by 0.8 to compensate for loss from battery charge/discharge
-
②
Continuous non-sunshine days in your area
-
③
Multiply line
②
and line
③
for total Wh required.
-
④
DC system voltage.
12
-
⑤
Divide line
④
by line
⑤
for required Ah.
-
⑥
Safety factor
2
-
⑦
Multiply line
⑥
and line
⑦
for total battery capacity Ah required.
Battery Capacity=
-
⑧
