If you look at cable gland supplier or a light switch, how many control points will it have? If it’s a double socket, it’s 2 gang, single socket is 1 gang. Same goes with a light switch, if it has one switch, it’s 1 gang, two switches, 2 gang etc.
This can be a term for a way the switch works. A 1 way switch simply breaks the circuit when thrown, it has only one live terminal. A 2 way switches the live connection from a single terminal to another one, letting it be linked to another 2 way switch, controlling one light from two positions.
Double pole is really a safety feature on mains electrical control points that breaks the connection of the two live and neutral terminals giving complete isolation, allowing for maintenance on high powered appliances.
An intermediate switch is designed for when you need to regulate a light from three positions. Imagine there is a landing light that needs to be controlled from two ends from the landing and the bottom of the steps, the switch in the center of this circuit will be an intermediate.
There is more choice compared to bog standard flexible conduit fittings plastic that adorn many 1000s of walls over the land. Many metal finishes are offered, some of the more usual ones are;
Painted White Metal (in gloss or matt)
All metal finishes can be found in slim plate depths, from 5mm to super slim 1.5mm and without or with visible screws. It can be worth noting that these slim plates won’t easily fit into anything shallower when compared to a 35mm deep backbox.
You can find new UK regulations signing up to new build properties concerning the position of stainless steel flexible conduit. All power sockets should be fitted no less than 450mm in the floor, while light switches cab1e be no greater than 1200mm in the floor. All points also must be no less than 350mm from any corner of your room. This can be to permit for simplicity of use by those with a disability or wheelchair users. Also, it is advised the sockets needs to be placed around 100m coming from a working surface to allow sufficient room without causing harm to hanging flex.