UNIT:- WIRING METHODS.
AIM:- How to control a Light bulb from 3 locations?
PERFORMANCE OBJECTIVES:- S.W.B.A.T (Student will be able to)
- Define a 4 way switch.
- Know the applications for a 4 way switch.
- Connect a light to be controlled from 3 locations using EMT raceway.
PRESENTATION:-
- Motication
- Definitions
4 WAY SWITCH:- It may be simply be defined as a controlling device, which main function is to provide control for a load from 3 or more locations. It consists of two (2) sets of travelers, input and output, which are to be connected in between the 3 way switches. The 4 way switch may be used for alternating power for 2 two or more loads.
SAFETY:- Always test for power even if the fuse or circuit breaker appears to be "OFF"