Few circuits are as simple as this first one, however, for there are generally additional lights or receptacles installed elsewhere, either in the ... It is called a 4- way switch (Figure 13-9b), and simply interchanges the travellers between the two 3-way switches, which are still required ... The wiring diagram in Figure 13-10 showsanbsp;...
|Title||:||Fundamentals of Electricity|
|Author||:||Russell R. Thwaits|