this lesson is for eim 10

1. ELECTRICAL
MATERIALS

2. 2. ELECTRICAL MATERIALS
a. Wires and Cables
Wires
A wire is a flexible cylindrical strand,
usually single, or rod of metal. It is used
to bear mechanical loads or electricity
and telecommunication signals.

3. 1.) STRANDED WIRE

4. 2.) SOLID WIRE

5. 3.) CABLE

6. CABLES
A CABLE IS USED TO CARRY
ELECTRIC CURRENT. IT IS AN
ASSEMBLY OF ONE OR MORE
WIRES RUNNING SIDE BY SIDE.

7. B. ELECTRICAL BOXES
THESE ARE ENCLOSURES OF
HOUSING ELECTRICAL
CONNECTIONS THAT ARE MADE
OF STEEL AND NON-METALLIC
MATERIALS TO PROTECT THE
CONNECTIONS AND PROVIDE
SAFETY BARRIERS.

8. 1.) UTILITY BOX

9. 2.) OCTAGONAL BOX

10. 3.) SQUARE BOX

11. 4.) PANEL BOX

12. 5.) CIRCUIT BREAKER BOX

13. 6.) SAFETY SWITCH BOX

14. C. FUSES AND CIRCUIT BREAKERS
FUSES
THESE ARE DESIGNED TO MELT
AND SEPARATE INTO TWO PIECES
FOR THE PURPOSE OF BREAKING
A CIRCUIT.

15. CIRCUIT BREAKER
IT IS AN ESPECIALLY DESIGNED
SWITCH THAT OPENS TO INTERRUPT
THE CIRCUIT CURRENT IN THE EVENT
OF AN OVERCURRENT CONDITION.
THIS IS AVAILABLE IN DIFFERENT
SIZES, SHAPES AND RATINGS.

16. TYPES OF FUSES AND CIRCUIT BREAKERS
1.) CARTRIDGE FUSE

17. 2. PLUG FUSE

18. 3.) KNIFE BLADE FUSE

19. 4.) MOLDED-CASE CIRCUIT BREAKER

20. D. SWITCHES
THESE ARE USED TO TURN ON
AND OFF THE CIRCUIT.

21. TYPES OF SWITCHES
1.) FLUSH TYPE

22. 2.) TUMBLER TYPE

23. E. FITTINGS AND ACCESSORIES
THESE ARE MATERIALS WHICH ARE
COMMONLY USED TO FIT WIRING
DEVICES DURING INSTALLATION.

24. SAMPLES OF FITTINGS AND ACCESSORIES
1.) INSULATED STAPLE NAIL

25. 2.) CONDULETS

26. 3.) PORCELAIN TUBING

27. 4.) ELECTRICAL TAPE

28. 5.) SAND PAPER

29. 6.) PVC FITTINGS

30. 7.) METAL CLAMP

31. 8.) DOUBLE CLAMP

32. 9.) LOCK NUT AND BUSHING

33. 10.) MALE PLUG

34. 11.) CONNECTOR

35. 12.) COUPLING

36. 13.) LIQUID TIGHT CONNECTOR

37. 14.) WIRE BUSHING

38. 15.) WIRE CONNECTOR

39. THANK YOU!!!