This is a typical modern-style light switch. The plate is just over 3 inches square:
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The mounting box used for light switches is often only 5/8 in. deep. Under current regulations, the grounding conductor would have to be sleeved with green/yellow instead of plain green, and the black (switch return) wire would need to be re-identified red:
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Here's a typical 2-gang "socket outlet" or receptacle, followed by our 13-amp plugs:
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And this is a "fused spur unit" or "fused connection unit," commonly used to hardwire a fixed appliance to the ring. This one is feeding a small over-sink water heater:
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The fuse is the same type (1 x 0.25 in. ceramic) as used in our plugs. These spur units are available with or without a switch.


[This message has been edited by pauluk (edited 07-13-2002).]