R. H. Ladley, William Perren Maycock. 2-WAY CEILING SWITCH 2-WAY WALL SWITCH If lamps and switches are fitted in a corridor L may be turned on at A and off at B, La#39; on at C and off at D, and so on. o LAMP NEW WIRING 51 is a two-way anbsp;...
|Author||:||R. H. Ladley, William Perren Maycock|