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"

HOW TO CONTROLL A LAMP FROM 3 LOCATIONS?

UNIT:-    WIRING METHODS.

AIM:-      How to control a lamp from 3 locations?

DO NOW:  Draw the actual & Schematic diagram for the following lay out.

HOW IS WATTS' LAW APPLIED TO AN ELECTRICAL CIRCUIT?

LESSON NO. 9

UNIT:-  Watts' Law 

AIM:-      How is watts' law applied to an electrical circuit?

PERFORMANCE OBJECTIVES:-   S.W.B.A.T  (Student will be able to)

1. Define watts' law.
2. Know the formula used for watts' law. 
3. Apply the watts' formula to an electrical circuit. 

SAFETY :-   Finding the total wattage consumption in an electrical circuit can assist us in determining the proper wire size and avoiding the overheating of the conductor, which could possibly lead to an electrical fire.

DEFINITIONS:-  Watts' Law :-  A formula used by electricians to dind the missing values for power, voltage and amperes in a particular circuit.

W= E x I           E= W / I           I= W / E

HOW TO MAKE 90* DEGREE BEND(ELBOW) ON 1/2" EMT?

LESSON NO. 9

UNIT:-    EMT How to make a 90* degree bend?

AIM:-      How to make a 90* degree bend (Elbow) on 1/2" EMT?

PERFORMANCE OBJECTIVES:-   S.W.B.A.T  (Student will be able to)

1. Define a 90* degree bend (Elbow).
2. Know the required steps to make a 90* degree bend. 
3. Make a 90* degree bend (Elbow). 

DEFINITIONS:-  90* Degree Bend (Elbow):-  A bend performed on a piece of tubing (Conduit) to change the direction from vertical to horizontal for the raceway.

STEPS:-

1. Measure the distance between the starting point and the desired location to start the bend.
2. Transfer this measurement to your tubing.
3. Deduct 5" for 1/2" EMT.
4. Place your tubing into your bender (shoe) with the deducted point (5") at the arrow on bender.
5. Make sure to have the handle on bender leaning towards the starting point. 
6. Step on the bender shoe and pull the handle towards you until the tip of the tubing is set to a vertical position off the floor. 

HOW TO CONTROL A CEILING LAMP FROM 2 LOCATIONS?

LESSON NO. 8

UNIT:-    WIRING METHODS.

AIM:-      How to control a ceiling lamp from 2 locations?

PERFORMANCE OBJECTIVES:-   S.W.B.A.T  (Student will be able to)

1. Define a 3 way switch.
2. Identify the terminals on a 3way switch. 
3. Connect a lamp to be controlled from 2 locations using EMT raceway.

DEFINITIONS:-  3 WAY SWITCH :-    This is a controlling device, Which it is used for controlling loads from 2 two or more locations. It may be used for alternating the flow of power for two (2) loads as well.

 Layout Plane:

HOW TO MAKE A 3 POINT SADDLE?

LESSON NO. 7

TOPIC:-    EMT.

AIM:-      How to make a 3 Point Saddle?

PERFORMANCE OBJECTIVES:-   S.W.B.A.T  (Student will be able to)

1. Define a 3 Point Saddle.
2. Know the application for a 3 Point saddle. 
3. Know the required to make a 3 Point saddle. 
4. Make a 3 Point saddle.

DEFINITIONS:-  3 Point Saddle:-    It is a bend that we go over an existing round obstruction in most cases another electrical raceway. This bend consists of 3 bends, One at the center and two other bends at equal distance from the center bend, But in the opposite direction.

 STEPS :-

1. Measure the distance of the starting point to the center of the obstruction. 
2. Transfer this measurement on to your tubing (place a mark) this becomes your center point.
3. For 1/2" EMT place on mark on your tubing 3 1/2" towards the left from your center mark (this becomes point X ).
4. Repeat step 3 but towards the right from center (This becomes point Y).
5. Make a 45* degree bend a center point of tubing by placing it at point "A" on bender. 
6. Reversing the tubing make a 22.5* degree bend at point "X" on tubing and place it at point arrow on bender.

WHAT ARE THE CHARACTERISTICS OF "THE ACTUAL WIRING" DIAGRAM?

LESSON NO. 6

TOPIC:-    Wiring Methods.

AIM:-      What are the characteristics of the actual wiring diagram?

PERFORMANCE OBJECTIVES:-   S.W.B.A.T  (Student will be able to)

1. Define the actual wiring diagram.
2. Identify the actual wiring diagram. 
3. Draw the actual wiring diagram for a given layout.

DEFINITIONS:-  Actual wiring diagram:-    It is an electrical drawing of devices shown in their actual setting and all connections are.