If you look at cable gland price or perhaps a light switch, the number of control points does it have? If it’s a double socket, it’s 2 gang, single socket is 1 gang. Same goes with a mild switch, if this has one switch, it’s 1 gang, two switches, 2 gang etc.
This is 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 in one terminal to a different, letting it be associated with another 2 way switch, controlling one light from two positions.
Double pole can be a safety feature on mains electrical control points that breaks the connection of both live and neutral terminals giving complete isolation, allowing for maintenance on powerful appliances.
An intermediate switch is perfect for when you want to regulate a light from three positions. Imagine there is a landing light that should be controlled from two ends in the landing and the foot of the stairs, the switch in the center of this circuit could be an intermediate.
There is much more choice compared to the bog standard flexible conduit fittings plastic that adorn many thousands of walls throughout the land. Many metal finishes can be purchased, several of the more usual ones are;
Brushed Stainless Steel
Painted White Metal (in gloss or matt)
All metal finishes can be bought in slim plate depths, from 5mm to super slim 1.5mm and without or with visible screws. It is worth noting that these slim plates won’t fit into anything shallower than the usual 35mm deep backbox.
There are actually new UK regulations signing up to new build properties about 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 more than 1200mm from your floor. All points should also be at the least 350mm from your corner of your room. This can be to permit for ease of use by people that have a disability or wheelchair users. It is also advised the sockets must be placed around 100m from the working surface to allow sufficient room without causing harm to hanging flex.