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Three-way Switches
These type switches do not have On / OFF markings. They are always installed in pairs; used to control a set of lights from two different locations.
Important installation points: * One screw terminal will be darker than the others (a dark copper or brown); this is the “common” screw terminal; location will vary according to the manufacturer. * Two screw terminals will be lighter in color (usually brass); these are called “traveler” terminals and are interchangeable. * If installation is for a three-way switch in the middle of a circuit, the box should have two cables; one will be a 2-wire cable, the other a 3-wire cable. Connect the black (hot) wire from the 2-wire cable to the darker screw terminal; connect the red and black wires from the 3-wire cable to the two lighter screw terminals. * When the installation is for a three-way switch at the end of a circuit, connect the wires from the 3-wire cable; the white wire will be hot and should be coded with black tape or ink. Four-way Switches These type switches have no On / OFF markings; they are always installed between a pair of three-way switches. This makes it possible to control the flow of electricity to a source from three or more locations. Four-way switches are commonly found in homes with large rooms and multiple living areas; for instance, where a kitchen opens into a dining room. Important installation point: * The box should typically contain two 3-wire cables. With most switches, hot wires from one cable should be attached to the bottom or top pair of screw terminals. Hot wires from the second cable should be attached to the remaining pair of screw terminals. British Builder, GB. builders, Build home, abc for builders, building, Builder online, Builder in uk, London builder, London decorator, Home project, First home, Second home, first decorators, Martin home, the builder, Builder in Britain, GB builders, Build my home, abc for builders, my home project, my first home, my second home, Not all switches are designed the same way, and some box configurations may also vary. For instance, some four-way stitches may have screw terminals that are marked “Line l” and “Line 2.” A pair of color-matched circuit wires will be connected to screw terminals for one line; another pair of color-matched circuit wires will be attached to the other. Regardless what type wall switch you install, study the wiring diagram and directions that come with the switch carefully. Follow manufacturer’s guidelines to the “T.” Some switches even have a wiring guide stamped right on the back of the device. Note: working with electricity is tricky business and can represent a danger if not handled properly. Always use extreme caution when working with electricity. Your wisest choice may be to hire an experienced electrician for all electrical aspects of your remodeling and renovation projects. 1. Richard Hammond: Sleek new Citroen C5 apes German rivals data: 07.04.08 Sleek new Citroen C5 apes German rivals 2. 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