Bustener caravan electrics 12v

Jan 30, 2025
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I have very little knowledge about the electrics in my van. I have bought a solar system with a 2000W inverter but I dont know how to set it up.

Originally I had it going through the main fuse box (in the wardrobe above heater) which I think just drains the 12v batteries because its meant for the grid.

I'm hoping with the photos I attached someone can help me! Thanks in advance
 
Last edited:
Nov 11, 2009
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I have very little knowledge about the electrics in my van. I have bought a solar system with a 2000W inverter but I dont know how to set it up.

Originally I had it going through the main fuse box (in the wardrobe above heater) which I think just drains the 12v batteries because its meant for the grid.

I'm hoping with the photos I attached someone can help me! Thanks in advance
Your photos haven’t come through. They need to be below around 1mb or less.
 
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Reactions: drew12
Apr 23, 2024
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You should ,IMO wire the 12V inverter inputs as close to the battery terminals as possible , via a 200A fuse and suitably thick wires , also keep in a ventilated space as it's going to to get warm. Realistically what are expecting from the battery solar panels ? because a 12V 110Ahr battery will supply 2kW for about 1/2 hour maximum if fully charged and some leisure batteries may not even last that long.
2kW at nominal 12V = 166 amps ( if the inverter is 100% efficient which they aren't),
Theoretically a 100 A.hr battery will supply 100A for 1 hour , but 100A.hr batteries are normally rated as such at a discharge rate of C20 ie. 20 hours discharge rate which is only 5A When stressed at supplying such a high current the battery would only last about 20 minutes , before the inverter would sense the drop in the battery voltage and switch off. Also your solar panel , if say its 100W capacity it may only produce 5- 10W on dull days, so would take a long time to recharge the battery. taking it at 10W continuous = 100/0.833A = 120 hour= 5 days , but wait ,we only get about 9-10 hours of useful daylight per day , so it would actually take 24/9 x 5 days =13.3 days if you used 2kW of mains power for 1 hour. I hope that given you an idea of the limitations of solar panels and delivering mains power from batteries.(it why some folks take petrol generators when going off grid)
 
Nov 30, 2022
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The inverter is to increase the 12v coming out of your leisure battery to power 230V appliances, such as a mains TV etc. It is nothing to do with your solar panel.

The solar panel requires a regulator/controller to control the current going into your leisure battery from your solar panel.
 
Jun 16, 2020
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Hi Drew12 and welcome. Your post indicates to me that you have little knowledge or experience of low and mains voltage wiring as you also admit. Therefore I would strongly suggest you get any work done by a qualified person.

John
 

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