I am extending the ring main to feed my conservatory. I am going to fit 3 double sockets on the ring and a 2.5kW electric heater using an FCU. Does it make any difference if the FCU is fitted as part of the ring main or should it be connected to a spur? If it is fitted in the ring and fuse blows in the FCU I presume this will not interrupt the ring.
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FCU - spur or ring?
- Thread starter Sickboy
- Start date
IMHO it is preferable to fit FCUs as part of the ring if you can, but it isn't essential, and if it would mean having it in a daft location then it's OK to put it on a 2.5mm spur. The fuse is on the load side of the FCU, not the supply, so if it blows it won't interrupt the ring.
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