Basic Electrical Installation Work

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These days most households have lots domestic appliances and electronic equipment, how many sockets should installed? Ultimately this a matter for the customer and the electrical designer but most consumer orga- nizations, the house builders NHBC and the Royal Society for the Prevention of Accidents (ROSPA) make the following general recommendations: ● The hard wiring for single socket outlet the same the hard wir- ing for double socket outlet. ● Sitting rooms will require between six and ten double sockets with one double socket situated next any telephone outlet power telecommunication equipment and two double sockets adjacent to the aerial outlet for TV, video and DVD supplies. ● Home Office six double sockets. ● Garage two double sockets. . ● Utility room two double sockets. ● Kitchens will require between six and ten double sockets, fitted both above and below the work surface for specific appliances. ● Hallways two double sockets with one situated next any tele- phone outlet. ● Single bedrooms four six double sockets.13.Electrical installations and wiring systems 293 Socket outlet numbers The Regulations allow install unlimited number socket outlets, the restriction being that each circuit must not exceed given floor area as shown Figs. 14.16 Typical ring circuit with spurs. Fused spur Fixed appliance Fixed appliance Non-fused spur Non-fused spur Non-fused spur Switched fused spur FIGURE 14. So, always install double switched socket outlet unless there reason not to.12 and 14. ● Double bedrooms four six double sockets