Electric Wiring, 3rd Edition

Socket-outlet adaptors 71

outlets have round pins and employ unfused plugs as each socket is fused at

source. Switched types can be obtained with a pilot light. Both flush- and

surface-mounted types are available, the surface type normally being fitted to

a pattress block or backplate.

Socket-outlets of 5 A rating are assumed to be loaded at 5 A and,

therefore, a maximum of three looped sockets are normally connected to

each radial feed. The appropriate circuit protective device is 15 A and in this

case when flexible cords are connected to 5 A socket-outlets the flexible must

be of

15

A rating, unless fused plugs are fitted, with a smaller