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Domestic wiring - is the wiring circuits in a house. Basically the ring main (that supplies all the sockets), cooker and lighting circuits.
A ring around wires in a wiring diagram most often represents a ring circuit in the wiring. A ring circuit is a wiring technique commonly seen in devices from the United Kingdom.
I assume this question refers to electrical installations in buildings. In which case, the answer is no. The ring main is unique to the UK and to some countries that have adopted the British wiring regulations. Elsewhere, such as in North America and Europe, ring mains are unknown in domestic installations.
What is a ring main?
The ignition barrel can be removed by removing the retaining ring. The barrel will slide out. Remove the wiring harness from the back of the barrel.
The 1994 Pontiac Grand Am ignition lock cylinder is held in place by the retaining ring at the top of the cylinder. Remove the retaining ring. Remove the wiring harness from the back of the cylinder.
Remove the ignition retaining ring. Pull the ignition barrel out. Remove the wiring harness from the back of the ignition.
The Mab Ring.
You will need to first check the fuse panel and wiring harness all the way back to the top of the fuel tank, if that is not the problem, then you will need to drop the fuel tank and remove and replace the fuel sending unit. On the top of the tank you will need to find the circular area with lines and wires coming out, disconnect those. then remove the lock ring by tapping the tabs in a circular direction until the ring pops off. nstall new unit the reverse way and reconnect the wiring and fuel lines
Remove the ignition cylinder retaining ring. Poll the ignition cylinder out. Remove the wiring harness from the back of the ignition cylinder.
If you are talking about an electrical ring main it can be as long as you want it as long as it returns back to the circuit breaker with the other end of the cable, which if you didn't return the 2nd end of the cable to the circuit breaker you would have a radial circuit.
Thames Water Ring Main was created in 1993.