Solosol Alternative Energy Solutions

Providing Solar Energy Solutions to the Costa Blanca

Solosol System Load Calculation Form
 


Use this form to Calculate your Solar System Requirements

Remember: Watts = Volts times Amps; Amps = Watts divided by Volts

Description of AC Loads Run by an inverter Watts X Hrs/Wk = WH/Wk
X =
X =
X =
X =
X =
X =
X =
X =
line 1 --> Total WH/Wk
2. Multiply line 1 by 1.25 to correct for inverter loss and battery efficiency.
3. Inverter DC input voltage; usually 12, 24 or 48 volts. This is DC system voltage.
4. Divide line 2 by line 3. This is total amp hours per week used by AC loads.
Step 2 Calculate your DC loads.

5. List all DC loads in the spaces below.

Description of DC Loads Watts X Hrs/Wk = WH/Wk
X =
X =
X =
X =
X =
X =
X =
X =
line 5 --> Total WH/Wk
6. DC system voltage. Usually 12, 24 or 48 volts.
7. Total amp hours per week used by DC loads. Divide line 5 by line 6.
8. Total amp hours per week used by AC loads from line 4
9. Add lines 7 and 8. This is total amp hours per week used by all loads.
10. Divide line 9 by 7 days. This is total average amp hours per day.

 


This document maintained by tim@solosol.net.
Material Copyright © 2005 SOLOSOL - built on planetharman