By Kate Armpriester
Writer, Kate Armpriester and writer, Sterling Pub Co Inc
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Extra info for Do Your Own Wiring
Receptacle Combinations. Receptacles are available combined with other electrical fixtures. These dualpurpose installations are helpful in small areas, where it isn't practical to have many outlets. Shown on page 38 are a switch-receptacle combination and a light-receptacle combination with complete wiring instructions. Receptacles for Safety and Con· venience. Special receptacles make your home safer or neater. One safety model is the locking type which actually locks the prongs into the slots of the receptacle.
Zip, fixture, or type SPT cord is used for lighting and other small appliances-it consists of stranded wires encased in a light thermoplastic insulation. Size 16- or 18-gauge is used for lamp wiring. Replace plugs when their casings are cracked or if the prongs are so worn that they no longer connect well at the receptacle. There are basically two types -those that are self-connecting and those with screw terminals. The screwterminal type plug, not shown here, is the old-fashioned round type that usually has a cardboard insulator over the wiring.
You might need to make a pigtail to the ground wires (page 31) and possibly a pigtail to the box terminal. The red and white (or white marked black) wires can be connected to either of the traveler terminals. Most importantly, however, the taped black wire must be connected to the common terminal. If the switches do not turn on the lights from two locations, reverse the travellers. Three-Way Switch / ~ Three-Way Switch ~ / Replacing a Four·Way Switch. Four-way switches, so-named because of their four terminals, are used along with three-way switches to provide additional points from where a light can be switched on and off.