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Garage wiring

Mark Mcleish

Hello

Needing  some advice. Moved into a bungalow and it has a detached large garage, CU from the house has armoured 6m cable running straight thr to the garage, I’ve just converted the garage into a snooker room and fitted new metal CU in there, containing

Axiom 80 A  RCD 80TA Main fuse… 1x B40, 2x B32, 1xB16 & 2xB6

i have 10 double sockets fitted, 1 on constantly for the fridge freezer. And a have a few oil filled radiators which I am looking for advice on how much voltage I can draw safely. Also the snooker table has underfloor heating attached to the underside of the slate which is attached to a 13 amp plug but total voltage draw is only 1000 W. And not on constantly.

Could any of the pros offer any advice on should I upgrade to 10m underground cable 

Thanks

Parents
  • 0

    Well if it is 6mm2 cable, and not showing signs of damage or age deterioration, then a 30A fuse will certainly be be sensitive enough not to allow it to cook. (In the sense the fuse will always let go long before the cable gets overheated) You may at some point feel the urge to change that fuse to something more modern, but to be honest there is little technical need to do so unless there is something else wrong with it.

    In your shoes I'd leave the cable and fuse alone, and use the room as you intend for a year, and see if there is really any problem in practice. Unless there is, there is little point in wasting your money.
    The number of sockets and so on is a red herring, you won't really have very many kilowatts of load plugged in for very long, or it will get unbearably hot and after a short time,  either you, or the thermostat, will remove the load, and the cable will not have had time to get hot by then.

    Mike

Reply
  • 0

    Well if it is 6mm2 cable, and not showing signs of damage or age deterioration, then a 30A fuse will certainly be be sensitive enough not to allow it to cook. (In the sense the fuse will always let go long before the cable gets overheated) You may at some point feel the urge to change that fuse to something more modern, but to be honest there is little technical need to do so unless there is something else wrong with it.

    In your shoes I'd leave the cable and fuse alone, and use the room as you intend for a year, and see if there is really any problem in practice. Unless there is, there is little point in wasting your money.
    The number of sockets and so on is a red herring, you won't really have very many kilowatts of load plugged in for very long, or it will get unbearably hot and after a short time,  either you, or the thermostat, will remove the load, and the cable will not have had time to get hot by then.

    Mike

Children
  • 0 in reply to mapj1

    It is probably an M.E.M. switch fuse, so is of very good quality and will last for years if not rusted through or physically damaged.

    Do not install fuse wire rated at above 30 Amps, paper clips or nails etc.

    https://www.ebay.co.uk/itm/224420972825?hash=item3440884919:g:EPQAAOSwsJtgc05z

    It is worth getting en electrician to check the earthing at the garage end. Or as a minimum, buy a socket tester, plug it into a garage socket and see that the correct lights illuminate.

    Z

  • 0 in reply to Zoomup

    Thank you all guys, especially zoomup. You are 100% correct, yes it’s M E M and I already have the plug tester and all three lights working perfect. Very much appreciated for all the  advice. 
    cheers 

    Mark 

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