If you examine cable gland supplier or a light switch, how many control points can it have? If it’s a double socket, it’s 2 gang, single socket is 1 gang. Same with an easy switch, if this has one switch, it’s 1 gang, two switches, 2 gang etc.
This is a term for how the switch works. A 1 way switch simply breaks the circuit when thrown, it merely has one live terminal. A 2 way switches the live connection in one terminal to another one, allowing it to be associated with 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 both live and neutral terminals giving complete isolation, making it possible for maintenance on high powered appliances.
An intermediate switch is designed for when you want to manage a light from three positions. Imagine you will have a landing light that should be controlled from two ends of the landing and the foot of the stairs, the switch in the middle of this circuit would be an intermediate.
There is much more choice compared to bog standard plastic flexible conduit fittings that adorn many 1000s of walls throughout the land. Many metal finishes are available, a number of the more usual ones are;
Painted White Metal (in gloss or matt)
All metal finishes can be purchased in slim plate depths, from 5mm to super slim 1.5mm and without or with visible screws. It is actually worth noting that these slim plates won’t easily fit in anything shallower compared to a 35mm deep backbox.
There are actually new UK regulations applying to new build properties with regards to the position of stainless steel flex conduit. All power sockets must be fitted at the very least 450mm through the floor, while light switches cab1e be no higher than 1200mm from your floor. All points must also be a minimum of 350mm from any corner of your room. This is allowing for ease of use by those with a disability or wheelchair users. It is also advised the sockets should be placed around 100m from your working surface to enable sufficient room without causing injury to hanging flex.