Solar Panels

1) What total capacity do you need?

Based on location (how many PSH/day in the worst irradiation month)
The daily energy yield you need for your designed load & recharge targets
Buffer added to account for degradation factors or load expansion window

2) What ‘operating’ voltage do you need for your battery & regulator choices?

PWM regulators require arrays that are voltage matched to suit the load
MPPT regulators require arrays that output at least 5V greater than the required
battery charging voltage, at the temperature corrected operating voltage

3) Do you need to match panel/array dimensions to the space available on an enclosure, roof or mounting frame?

PWM regulators require arrays that are voltage matched to suit the load
MPPT regulators require arrays that output at least 5V greater than the required battery charging voltage, at the temperature corrected operating voltage

4) Do you need to consider the weight of the panel(s)?

WHS lifting considerations
Wind loading on a tall pole assembly

5) How will the panel(s) be mounted?

Post side, post top, roof flush, roof tilted
Thin lite panels that can be glued down (inc vertical scenarios)

6) How long does your cable run need to be?

Check cable gauge and length vs operating voltage and voltage drop

7) Does the panel come with pre terminated connectors?

Do you need parallel branch connectors to match?
Do you need string fuses for arrays with parallel configurations