There appears to be a lot of confusion re rings & radials.
A ring is mearly a way of connecting a number of sockets with cable rated at a lower current carrying capacity than the upfront protective device by looping the cable back to the consumer unit. You can therefore have more sockets on the circuit.
A radial is a single cable which can either supply a single piece of equipment, shower, oven or a single or DG socket etc, this is fused accordingly for required current and the cable is likewise sized to suit,
or indeed a line of sockets, the number of sockets is dependent upon various factors, however they will all be protected by the upfront device.
2.5 T&E would be protected by a 16A device or possibly 20A for sockets for a single piece of equipment you could go to 25A.
4mm T&E could be fused for 32A for a radial.
Nowadays only the utility or kitchen would be a ring, other rooms being radials this gives you maximum discrimination against faults.
A spur is a single leg off a ring or radial and can only have one socket attached unless it is protected via a Fused Spur or Switch Fused Spur.
A ring is mearly a way of connecting a number of sockets with cable rated at a lower current carrying capacity than the upfront protective device by looping the cable back to the consumer unit. You can therefore have more sockets on the circuit.
A radial is a single cable which can either supply a single piece of equipment, shower, oven or a single or DG socket etc, this is fused accordingly for required current and the cable is likewise sized to suit,
or indeed a line of sockets, the number of sockets is dependent upon various factors, however they will all be protected by the upfront device.
2.5 T&E would be protected by a 16A device or possibly 20A for sockets for a single piece of equipment you could go to 25A.
4mm T&E could be fused for 32A for a radial.
Nowadays only the utility or kitchen would be a ring, other rooms being radials this gives you maximum discrimination against faults.
A spur is a single leg off a ring or radial and can only have one socket attached unless it is protected via a Fused Spur or Switch Fused Spur.