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- Lighting Circuits
- Radial Circuits
- Ring circuits
Ring Circuits
A ring circuit can serve an area up to 110 square metres (120 square yards), 2.5mm2 cable is used to wire the circuit and the circuit has a 30amp fuse or 32amp MCB on the consumer unit. It is usual for a house to have one ring circuit upstairs and one ring circuit downstairs.
Ring circuits can have extra sockets added to them by adding a 'spur' onto a ring circuit. A spur is a branch off the ring circuit, usually from an existing circuit, although a junction box could also be used. Theoretically as many spurs as sockets could be added, but the maximum load of the circuit (30/32amp) still exists).
Radial Circuits
Radial circuits can therefore only serve a smaller area. Using 2.5mm2 cable combined with a 20amp fuse/MCB an area of 20 square metres (24 square yards) is permissible. For 4mm2 cable combined with a 32amp MCB or a 30amp cartridge fuse (a re-wirable fuse is not allowed) an area of 50 square metres (60 square yards) is permissible.
In a similar way to ring circuits spurs can be added at points along the radial circuit if required. High powered appliances (cookers / showers) must have their own radial circuit.
Lighting Circuits
Lighting circuits are basically radial circuits. There are two distinct types of lighting, circuit the loop-in circuit and the older junction box circuit. Most houses combine aspects of both types of circuits. The loop-in circuit has a cable, running from light to light terminating at the last light as in the conventional radial circuits and then single cable run from the lights to the light switches.
The other type of lighting circuit has a junction box for each light. The cable runs from the consumer unit to the first junction box and then onto the next terminating at the last junction box. Then another cable is run from each junction box to its light and another wire from the junction box to that light switch. The cable used for a lighting circuit is 1mm2 or 1.5mm2 for long runs.
Another Answer
I think that this question is referring to more fundamental circuits than those described above. There are fourcategories of circuit: series circuits, parallel circuits, a combination of the two (series-parallel circuits), and complex circuits. Complex circuits describe circuits which don't fall into the first three categories.
What else can I help you with?
What type of electrical circuit will be broken if a wire breaks?
Current will cease to flow in a series electrical circuit.
What are the components of an electrical circuit?
write 3 components of an electronic circuit
What are the components of electrical circuit?
write 3 components of an electronic circuit
What are the Recommendations for when to use the series circuit?
This really depends on the scenario. What type electrical circuit are you talking about.
What did Sir Charles Wheatstone invent?
A type of electrical circuit.
What type of energy flows in a circuit?
Electrical energy flows in a circuit, which is the movement of electrons through a conductor like a wire. This flow of electrons creates an electric current that powers devices connected in the circuit.
What is a reusable safety switch that breaks the circuit when the current gets too high?
In the electrical trade, this device is known as a circuit breaker.
What type of circuit breaker do I need for my electrical system?
For your electrical system, you will need a circuit breaker that matches the voltage and amperage requirements of your appliances and wiring. It is recommended to consult with a qualified electrician to determine the specific type of circuit breaker needed for your system.
Which is not a type of home circuit?
Wind circuit is not a type of home circuit. The common types of home circuits are electrical circuits, lighting circuits, and dedicated circuits.
What type energy flows in a circuit?
Quite often, the word "circuit" is used for an electrical circuit. In that case, the energy is electrical energy.
Which type of circuit is favored for operating several electrical devices each independently of other series or parallel?
parallel circuit .
What type of energy do the circuit the batteries in the circuit have?
Batteries have chemical energy stored inside them. Of course, when they provide a current, this chemical energy is transformed (in part) into electrical energy.
