Socket Ring Main Fuse

The ordinary wall sockets around the house are normally connected to a ring circuit also referred to as a ring main.

Socket ring main fuse.

The reduced diameter conductors in the flexible cords connecting an appliance to the plug intended for use with sockets on a ring circuit are individually protected by a fuse in the plug. The ring main must be protected by a 30amp fuse if it is on a cartridge fuse board or a 32amp mcb fuse. The cable itself can be up to 60 meters long if it is protected by a cartridge fuse and 50 meters long if protected by an mcb. Where connection to a fixed appliance is required a fused outlet unit may be fitted to the wall rather than a plug socket and connected into the ring main.

Its advantages over radial circuits ar. The ring circuits of a domestic property supply the socket outlets and fixed appliances in the premises. Meter mains with safety socket bypass. 2 0 main fuse 14 1 0 38 12 45 8 aw hub fig.

This design enables the use of smaller diameter wire than would be used in a radial circuit of equivalent total current. 1 78205152000 214 mtbp ms15 14. This video looks at the difference between a metal and plast. Until the cable returns to the consumer unit.

The ring is formed by the cable going from the consumer unit to the first socket then on to the second socket and then the next socket etc. Ring type nema type 3r ansi 61 gray e coat finish aluminum snap ring included standards ul 67 listed ansi c12 7. These outlets require the correct fuse rating for the appliance and are connected to the appliance by a cable or flex. It could just be a faulty mcb if you want to test it then swap it for the one same rating should be 32a that controls the upstairs ring main.

Clip cables properly with cable clips. So as zax47 says it s most likely a general fault on the ring main that s tripping and causing your main rcd to trip.