Lv 5
wave asked in Home & GardenDo It Yourself (DIY) · 3 months ago

Laying double insulated 2.0mm2 wire behind a  camper van wall is conduit necessary?

As the question says. The wire is 2.0mm2 which I think has a 25 amp capacity, the wire is to supply an electric fan which draws 15watts and the supply is from a 12v leisure battery.  The wall is in a self built camper van and where the wire will lay has foam insulation behind the wall. Is it necessary to lay the wire in conduit or will it be fine without? Thanks

5 Answers

  • 3 months ago

    2.5mm has a capacity of 27Amps. Typically nothing in a camper van exceeds 10A. 

    Just don't use expanded polystyrene as insulation. It 'eats' the wire's insulation. 

  • y
    Lv 7
    3 months ago

    Wire size has to do with amps and all that jazz, those other letters on the wires, tell you where and how they can be used, whether they need to be run in a pipe, if it is ok to run them in the ground, in a wall, whatever.

    I had to look up2.0 mm wire, can't find it, looks to be between 16 and 14, which are not 25 amp, 10 is 30, 12 is 20, 14 is 15.

  • Edwena
    Lv 7
    3 months ago

    Run an armored cable.  Check someone like Home Depot for the hundred or so different kinds of wire/cable and find out what is the name of the cable used for your application.  Some name like THHW stranded cable (that is not your cable). 

  • 3 months ago

    Campers MOVE. The motion WILL stress the wires if they are not in conduit.

    NOTHING you said about the wire size of capacity changes that fact.

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  • ?
    Lv 7
    3 months ago

    It’s not necessary but doing so is a very wise move.

    Not only does it improve safety, but a conduit means it will be far easier in future to replace the wiring if you need to upgrade it to handle higher powered accessories.

    Conduit also makes adding additional wiring for other upgrades far easier. 

    As flexible corrugated conduit is dirt-cheap, not using it is pointless.

    If you lay a length of heavy-duty nylon fishing line into the length of the conduit and secure the loose ends at each end of the conduit with screws (adhesive tape tends to come adrift) then you have a draw-string in place for future wiring upgrades.

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