Hello,
I cannot connect to the indoor lighting circuit for an outdoor light supply so I'm thinking of teeing off the ring main with a junction box to supply a switched 3amp FCU to the (100w) light.
My (main) concern is that I might be teeing off an already dodgy spur supply rather than the ring main. I can't tell for sure because most of the wires are hidden in ceiling and wall cavities but it looks like there is only one cable supplying a double socket and one cable off that supplying another double. The sockets are currently only supplying electricity to a fridge freezer and are hidden behind new kitchen units.
Should I add a 13amp FCU and then worry about the JB and 3amp FCU? I've read here that as long as you put a 13amp FCU in a supply you can run a few spurs off it.
What other safety factors should I take into consideration? Will this work at all?
I'd appreciate any advice before I blow anything up or burn anything down.
I cannot connect to the indoor lighting circuit for an outdoor light supply so I'm thinking of teeing off the ring main with a junction box to supply a switched 3amp FCU to the (100w) light.
My (main) concern is that I might be teeing off an already dodgy spur supply rather than the ring main. I can't tell for sure because most of the wires are hidden in ceiling and wall cavities but it looks like there is only one cable supplying a double socket and one cable off that supplying another double. The sockets are currently only supplying electricity to a fridge freezer and are hidden behind new kitchen units.
Should I add a 13amp FCU and then worry about the JB and 3amp FCU? I've read here that as long as you put a 13amp FCU in a supply you can run a few spurs off it.
What other safety factors should I take into consideration? Will this work at all?
I'd appreciate any advice before I blow anything up or burn anything down.