Common questions

How many Spurs are on a ring main?


How many Spurs are on a ring main?

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 can I tell if I have a ring or radial circuit?

Undo the Live (RED) terminal and remove the two red wires, now using a multi meter switch it to OHMS and place one of the leads on each of the red wires or use a continuity tester, the meter should read Zero or very low resistance, some meters will emit a bleep also, this means that there is a circuit there and that it …

Why is the ring not radial?

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. However ring wiring was not driven by copper shortage.

What kind of tester do I need to test a ring?

Insulation Resisance Tester / Low Resistance Ohm Meter: Usually combined as one Unit. IR tester reads out in Mega Ohms, Low Resistance Ohm Meter for testing R1+R2 reads out in Ohms. You may well be using a Multi-Function Tester where they are all combined in one unit, along with a Loop Tester (for testing Zs and Ze) and an RCD Tester.

How to test a circuit with a multimeter?

Connect the test leads to the circuit you wish to test. Connect the black probe first. Touch it to the negative terminal if you’re testing a device with one. Then, touch the tip of the red probe to the opposite terminal or end of the circuit.

How to test wire resistance with a DMX multimeter?

Touch the wire you’re trying to identify to either lead on the multimeter. 3. Touch the other lead to one of the pins in the DMX cable barrel connector. Be careful not to touch the other pins or the side of the connector while testing. Try each pin until the multimeter rings out. 4.

How to test a ring main with 4 sockets?

I have installed a ring main with a total of 4 sockets. I am having trouble with the testing side of it. 1. First i do the CPC whoch is putting a temporary link in the earth and live of the DB and then using a voltage indicator put the probes in the live and earth on the sockets. (set the indicator to ohms) 2.