Wiring 4G LTE Router in 12v circuit on caravan

[oakc]

Hi all,

looking for some guidance, i want to fit a 4g lte router in the back of my caravan and usb sockets by the bunk beds, running off leisure battery so can still use it off grid.

there's a wardrobe/locker at the back of the van and wondered whether i could get my feed from existing wiring in there? can clearly see there's lights circuit for lights in the bunk beds but is it bad practise to add the router and usb socket getting feed from lighting circuit?

router can run on 9-48v so haven't got to worry about regulating the voltage i'd assume as i know when on electric hookup can reach up and over 14v.

router is 2amps and the x2 usb sockets are 4.2amps each and the usb socket has an inline 10amp fuse

i've put usb sockets in situ as you'll see from photos that i haven't wired up yet as same question goes for them was going to use piggyback terminals and connect them via lights terminal?

it'd be a much bigger job to run cables from back wardrobe to leisure battery but is that what i need to do, to do it properly?

any advise or guidance is much appreciated!

 

[Harry Bloomfield]

router is 2amps and the x2 usb sockets are 4.2amps each and the usb socket has an inline 10amp fuse

Your 4.2amps at 5v, will translate to maybe 2amps max at 12v, so you are looking at around 2 + 2 + 2 for the router - 6amps max load, but probably much less than the max. I would be inclined to wire it to the lighting circuit temporarily and see how it performed in practise.

A big problem with such low voltages and thin wiring is volts drop due to the resistance of the wires - so test it out at maximum load and check the actual voltage at the back of one of the new sockets, when compared to the volts at the battery. The difference is the volts drop.

 

[Lectrician]

And I assume the light has a switch on it? It’s not switched elsewhere? You need a permanent feed.

 

[oakc]

yes both lights top bunk and bottom bunk they have switches on them