What does DP and SP mean on sockets?

Commonly used as light switches in your household, all electrical switches can practically turn on and off any electronic device. We categorise switches as single-pole (SP) or double pole (DP) switches based on their working mechanism and functionality.

What is the difference between SP and DP?

SP: is an abbreviation for Scale independent pixels. It is the same as the dp unit, but it is additionally scaled according to the user's font size selection. DP: A virtual pixel unit used to communicate layout dimensions or location in a density-independent manner while creating UI layout.

What is difference between single pole and double pole socket?

Both single pole and double pole switches can be either single or double throw. A pole refers to the number of separate circuits a switch can control, a single pole switch can operate one circuit whereas a double pole switch can control two circuits. A throw refers to how many positions can be activated by a switch.

What does SP mean on the back of a light switch?

The word "SP" means single pole. The neutral is permanently connected after it switches one wire. "Double Pole" is what DP means. Both the P and the neutral are switched.

Do I need single or double pole switch?

If you want to switch a 240-volt circuit, you must interrupt both hot wires at the same time. That's why you need a double-pole switch, which is technically one that controls two circuits.

Way in switch Gang in switch and SP DP Pole Difference in electrical switches

What is a DP switch used for?

Double pole light switches are essentially two single pole switches put together. They are typically used to control a circuit that needs complete isolation from the supply for safe maintenance, such as fans or cookers/ovens.

What are the 4 types of switches?

What does SP mean in electrical?

SP and DP refer to single pole and double pole, ST and DT refer to single throw and double throw. Pole refers to the number of circuits controlled by the switch: SP switches control only one electrical circuit.

Does it matter what wire goes where on a light switch?

It doesn't matter as long as you do it the same on both switches. So, if you connect it to the upper right terminal on one switch, connect it to the upper right terminal on the other switch. Connect the second traveler wire to the terminal opposite the red wire terminal.

What does P mean on a light switch?

Only show this user. the P switch. guys - the p switch does turn on your parking lights, and if you are in the U.S. it does nothing.

What is a DP socket?

The difference between a DP and SP socket is the switch, it either breaks the live in a SP socket or Live and Neutral in a DP socket SP means Single Pole and DP means Double Pole.

Can a double pole switch be used as a single pole?

A double pole switch can be used to control light and a fan or 2 lights on separate circuits. It is easy to wire a double pole switch to work as a single pole switch because only one side is used instead of both.

What is a dp unit?

dp or dip ( Density-independent Pixels) — an abstract unit that is based on the physical density of the screen. These units are relative to a 160 dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of dp-to-pixel will change with the screen density, but not necessarily in direct proportion.

What is SP font size?

“pt” is – and this does NOT affect us in practice - Android wants a dp to be the same size across every device, so it's actually locked at 1/160th of an inch. Of course, presuming the same font size user setting, the same could be said about “sp” – it's 1/160th of an inch.

Is dp equal to pixel?

One dp is a virtual pixel unit that's roughly equal to one pixel on a medium-density screen (160dpi; the "baseline" density). Android translates this value to the appropriate number of real pixels for each other density. For example, consider the two devices in figure 1.

What happens if you wire a switch wrong?

If you damage the wires during installation, you could break the switch, or the wires could come loose. Loose wires present a danger when changing the light switch. Thirdly, you could create a short circuit in the switch. A short circuit can cause the breaker or fuse to pop.

Does it matter where black and white wire goes on light switch?

A standard single pole light switch will simply require you to attach the black (load) wire into it, and then the black wire leaving the switch and to your lights. The switch serves to cut the power from reaching the light switch. The white or neutral wire bypasses the switch and goes straight to your lights.

What is a double pole socket UK?

Double pole means both PHASE and NEUTRAL are switched together; giving complete isolation to the appliance. Single pole sockets tend to be the "trade range" which only just about manage to scrape the BS 1363.

What are the 3 types of switches?

Types of Switches. There are three types of mechanical switches: linear, tactile, and clicky. They each have a distinct feel when pressed and are made for different kinds of users.

Which switches are best for House?