Tuesday, December 7, 2010

Mounting Box

Figure 1.18 shows a pattress for use with batten lampholders . Figure 1.19 shows a different types of pattres .This is useful with some modern building methods in which the wiring is insalled in a special skirting . The skirting is at floor level , but this is too low for socket outlets and the latter are , therefore , a little above the skirting so that at each outlet , cables have to rise a small vertical distance . The pattress shown provides a neat and convenient way of doing this . It has also been known to happen that in the course of erecting a new building , an electrical outlet is wrongly placed . For example , a heating pipe to a radiator may run right in front of the box left to take a socket outlet . The type of pattress shwon in Figure 1.19 is a neat way of extending the wiring to an adjacent position , where the alternative might be to demolish large parts of a wall alread built in order to give acces to conduit buried in it , as the olny means of extending that conduit .

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