many people put on about 8-10 per circuit.

How many sockets can you run off a radial circuit?

If you adhere to the principles above e.g. a radial circuit running from a consumer unit with its own MCB of the correct rating can have as many socket as you like, as long as it’s in an area not exceeding 50 square metres (or 540sq ft).

How many sockets can be on a circuit?

In a radial final circuit supplying sockets, each socket outlet is fed via the previous one. Live is connected to live, neutral to neutral and earth to earth at each socket outlet. The cable used must be at least 2.5 mm2, and the maximum number of socket outlets per circuit is ten.

How many sockets can connect for ring circuit?

There is no limit to the number of sockets you can have on a ring main but there is a limit to the number of spurs you can have from those sockets or from the wiring between them. If you would like to know how to add a spur to an existing ring main, see our project on adding an extra socket.

How many sockets can you spur off a ring?

A spur can be connected to an existing socket, on either a ring main or a radial circuit, providing that socket does not already have a spur. That is only one spur per socket is allowed and the number of spurs must not exceed the number of sockets.

How many 13A sockets can be on a ring circuit?


The IET Wiring Regulations (BS 7671) permit an unlimited number of 13A socket outlets (at any point unfused single or double, or any number fused) to be installed on a ring circuit, provided that the floor area served does not exceed 100 m2.

How many sockets can be on a 20 amp circuit?

ten outlets

The answer to the question how many outlets on a 20 amp circuit is ten outlets. Always comply with the 80% circuit and breaker load rule, allowing a maximum load of 1.5 amps per receptacle. Remember that your circuit, wire sizes, and outlets must be compatible to avoid overheating and electrical hazards.

Can you run a radial circuit off a ring main?

Usually a garage would be supplied by it’s own circuit or connected to a 13A spur off a ring circuit (depending on load requirements).
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How do I know if my circuit is radial or ring?

2) You could remove another socket on the same circuit, and with no large loads attached, temporarily disconnect one cable, and see if all the sockets carry on working (ring) or if a bunch of them are dead (radial).

Which is better ring or radial circuit?

Ring circuit wiring offered a more efficient and lower cost system which would safely support a greater number of sockets. The lower costs aspect was related to fact that wires with a smaller diameter could be used, compared to radial wiring.

Are radial circuits legal in UK?

16th Edition (reference only) – NOW superseded by the 17th Edition IEE Regulations. Two types of radial circuit are permitted for socket outlets. In neither case is the number of sockets to be supplied specified, so the number will be subject to the constraints of load and diversity.

How many ring circuits are in a house?

There is one ring circuit for the whole house and one lighting circuit, obviously modern practice is to have at least two lighting circuits and more then one ring circuit, would anyone put a note on the peridic for this as a code 4 because of reg 314-01-01 (i) Every installation should be divided into circuits …

Can I put 2 double sockets on a spur?

you can have maximum one double socket as a normal spur but if you are going from socket to FCU fused at 13 amp from there you can add as many sockets as you wish as all the sockets and cable will be protected by the fuse so no chance of overloading the cable the fuse will blow first.

How many sockets can you run from a fused spur?

How Many Sockets Can Be on a Spur? Only one spur can be connected to a single socket.

What happens if you spur off a spur?

There is no problem in spurring off a fused spur (I think that’s what you mean). The principle is you just need to protect the cable. This week I’ve seen a unfused spur from a socket on the ring to a single socket (in 2.5 6262Y) – then from the single socket to a FCU in 1.5 6242Y for the boiler.

Can I run a double socket from another socket?

You can either run this from an existing socket, or from a junction box that’s connected into the cable run of a suitable ring circuit. The circuit must have RCD protection.

Can I add a socket to a ring main myself?

As long as the job isn’t within a ‘special location’ such as a bathroom or outdoors, you’re also allowed to install additional new light fittings, switches, sockets and even add a single fused spur to an existing circuit (a ‘spur’ is a new cable and socket run as a branch from an existing socket on the ring main).

Can I use 1.5 mm cable for sockets?

The cross sectional area of the earth wire in a 1.5mm cable is 1mm and in a 2.5mm cable it is 1.5mm. This should be sufficient for most domestic socket and lighting circuits.

Can I use a junction box to extend a ring main?

Effectively you cut the wire on the ring feeding a new wire to socket via a juction box, then feed a wire from socket back to the other wire on the ring via a juntion box. Extending the ring gives you the option to extend in the future.

How many wires are allowed in a junction box?

Choose the Right Junction Box

For example, the smallest 2-by-4-by-1-1/2-inch-deep box can comfortably splice only two cables (four or five conducting wires), while the largest 4-by-4-by-2-1/8-inch-deep boxes can handle as many as four to six cables (up to 18 individual conducting wires).

How many junction boxes are in a circuit?

There are no limits on the number of junction boxes (without devices) in any particular circuit.