Socket Ring Main Mcb

Ring circuits are widely used to supply sockets for 13a plugs.

Socket ring main mcb.

The main purpose of a spur is adding an extra socket on to an existing ring main circuit. Its simplicity makes it a great arrangement for that use. The ring is fed from a fuse or circuit breaker in the consumer unit. I have unplugged everything and it still tripped the rcd.

The ring circuit cable starts at the consumer unit fusebox visits each socket in turn and then returns to the consumer unit. Is this correct should i have the mcb changed to a 20a breaker. He has checked my load current and says it is 16a. Is this now a problem with the wiring.

Hi i have a ring mains for my downstairs sockets and very recently the circuit keeps tripping the rcd protecting it. I have an electrician friend who has told me this is not right and should be changed to 20a breaker. They are generally wired with 2 5 mm cable and protected by a 30a fuse an older. The ring starts at the consumer unit also known as fuse box distribution board or breaker box visits each socket in turn and then returns to the consumer unit.

Hi guys i have a consumer unit with a 32a type b mcb on a ring main which as 2 5mm t e sheathed cable. The 2 cable ends at the cu are connected together in all modern rings and supplied by one fuse or mcb. The other ring main is for tv stereo table lamps etc. One radial is a feed for the garage 2 sockets and a two flouros.

I have also changed the sockets for double pole ones and it still trips the rcd. Ring circuits are commonly used in british wiring with socket outlets taking fused plugs to bs 1363 because the breaker rating is much higher than that of any. Therefore the most you can take from any one socket is limited to 13 amps 3000 watts the mcb protects the cable against overload. The socket contacts and applience plugs and cables are protected by the 13a or less fuses in the plugs.

As you can see it eliminates the need to wire a socket all the way back to the a consumer unit but the nearest ring main socket is used instead.