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THE BEGINNER If your new to motorhomes, this the place to nervously ask your first questions, go on ask away, we don't bite.

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Old 03-08-2008, 11:20 AM   #21 (permalink)
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Thank you Gents.

Your response has steered me in the right direction

Without being a guru in the field of amps and watts, I was trying to estimate how much value I would get from 1 of the maplins 60watt solar panel.
I understand the price is very good and was originally unclear about how many of these panels I would need to power my setup.

Looking at the below guide, I think I will require two of these maplin 60 watt panels.

I found an website that broke this down in lay mans terms for me.

ThinkOffGrid - Complete Guide to Solar Power and Wind Power

This is quoted text from the website and is quite helpful.

I guess now my quest is to find appliances that use the least amount of amps per hour. Energy efficient appliances - or something of the like.

Cheers
Justin

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160 watts delivers roughly 13 amps per hour of charging time.

If you count on six good hours of charging per day, the two solar panels can put 78 amps away daily.
This was plenty to charge the six deep cycle 12 volt batteries.
Each battery furnishes 115 amp hours for 690 amp hours in the pool to draw from.

To determine how many amp hours you will need take the watts of the device and divide by 12.

A 60 watt bulb uses five amps per hour.
If you took that 60 watt bulb and left it on for six hours in the evening, it would draw 30 amps of power from your pool.
The next day when the sun was out you would need to replace those 30 amps with the solar panels.

Here is a rough break down in amp of what the cabin currently draws.
Everything at the cabin runs on 12 volt.

Three 20 watt halogen lights kitchen - 5 amps - 3 hours - 15 amps
Two 5 watt florescent lights living room - 1 amps - 4 hours - 4 amps
One 1 watt LED reading light bedroom - 0.2 amps - 5 hours - 1 amps
Sirius Radio - 1.5 amps - 6 hours - 9 amps
Cooling Fan - 2 amps - 6 hours - 12 amps
Water pump - 6 amps - 1/2 hours - 3 amps
Laptop - 6 amps - 3 hours - 18 amps

Total daily amps - 62 amps
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