HOW TO CONTROLL A LIGHT FROM 3 LOCATIONS.

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)

1. Define a 4 way switch.
2. Know the applications for a 4 way switch. 
3. Connect a light to be controlled from 3 locations using EMT raceway.

PRESENTATION:-   

1. Motication
2. 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"