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IT IS A FORM OF ENERGY GENERATED BY FRICTION, INDUCTION, CHEMICAL CHANGE OR RADIANT EFFECT.

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EECTRICITY

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ELECTRICITY

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Is a form of energy generated by friction, induction, chemical change or radiant effect.

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IT IS A PROPERTY OF EVERY MATTER THAT OCCUPIES SPACE AND HAS MASS.

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ELECTRICITY

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ELECTRICITY

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IT IS A PROPERTY OF EVERY MATTER THAT OCCUPIES SPACE AND HAS MASS.

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WILLIAM GILBERT

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FATHER OF ELECTRICITY

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FATHER OF ELECTRICITY

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WILLIAM GILBERT

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AFTER WHEN DID WILLIAM GILERT BECAME RECOGNIZED AS HE FATHER OF ELECTRICITY?

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AFTER PUBLISHING HIS STUDIES ABOUT "ELECTRIC ATTRACTION"

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ELECTRICITY WAS FIRST DISCOVERED BY?

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ANCIENT GREEKS CIRCA 600 BC

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STATES THAT ALL MATTER IS MADE UP OF ELECTRICITY

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ELECTRON THEORY

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ELECTRON THEORY

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STATES THAT ALL MATTER IS MADE UP OF ELECTRICITY

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SOURCES OF ELECTRICITY

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FIRCTION

CHEMICAL ACTION

HEAT ACTION

LIGHT ACTION

PRESSURE

MECHANICAL ACTION

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EFFECTS OF ELECTRICITY

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LUMINOUS

THERMAL

PHOTOELECTRIC

MAGNETIC

MECHANICAL

CHEMICAL

PHYSIOLOGICAL

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PRECAUTIONARY MEASURES

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D A W W K

K L U W B

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ELECTRIC SHOCK

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IS A SUDDEN AGITATION OF THE NERVOUS SYSTEM OF THE BODY DUE TO PASSAGE OF ELECTRIC CURRENT

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IS A SUDDEN AGITATION OF THE NERVOUS SYSTEM OF THE BODY DUE TO PASSAGE OF ELECTRIC CURRENT

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ELECTRIC SHOCK

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FACTORS AFFECTING ELECTRIC SHOCK

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1. AMOUNT OF CURRENT THAT HAS PASSED THRU THE BODY.

2. PATH OF ELECTRIC CURRENT THRU THE BODY.

3. LENGTH OF TIME THE CURRENT IS PASSING THRU THE BODY.

4. FREQUECY OF THE CURRENT AND PHASE OF THE HEART CYCLE WHEN SHOCK OCCUR.

5. PHYSICAL AND PHYSIOLOGICAL CONDITION OF THE BODY.

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A PERSON MAY RECEIVE SHOCK FROM

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SCIT

1. STANDING ON THE GROUND WHILE BEING IN CONTACT WITH LIVE WIRE

2. IF INSULATED/GROUNDED WHILE BEING IN CONTACT WITH TWO OR MORE CONDUCTORS WITH DIFFERENT POTENTIALS.

3. CONTACT WITH MACHINE WITH WEAK INSULATION OF FAULTHY EARTHING.

4. TOUCHING SHOCK VICTIM WITHOUT ADEQUATE PROTECTION.

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LIST OF CONDUCTORS

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1. COPPER

2. SILVER

3. ALUMINUM

4. BRASS

5. NICKEL

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LIST OF INSULATORS

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1. PAPER

2. GLASS

3. RUBBER

4. OIL

5. WOOD

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WIRES

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ARE ELECTRICAL CONDUCTORS OF SIZES 8 SQ. MM AND SMALLER

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ARE ELECTRICAL CONDUCTORS OF SIZES 8 SQ. MM AT MOST

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WIRES

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CABLES ARE LARGER WIRES

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CABLES ARE LARGER WIRES

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TWO TYPES OF WIRES

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1. STRANDED

2. SOLID

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CORD IS AN INSULATED WIRE

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CORD IS AN INSULATED WIRE

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ELECTRICAL CONDUCTORS ARE WIRES WRAPPED WITH INSULATORS

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ELECTRICAL CONDUCTORS ARE WIRES WRAPPED WITH INSULATORS

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INSULATORS SERVES AS A PHYSICAL SHIELD FOR THE WIRE

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INSULATORS SERVES AS A PHYSICAL SHIELD FOR THE WIRE

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AMPACITY

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CAPACITY OF THE WIRE TO CARRY CURRENT W/O OVER HEATING

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CAPACITY OF THE WIRE TO CARRY CURRENT W/O OVER HEATING

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AMPACITY

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FACTORS INFLUENCING CONDUCTOR RESISTANCE

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1. COMPOSITION OF THE CONDUCTOR

2. LENGTH OF THE WIRE

3. CROSS SECTIONAL AREA OF THE WIRE

4. TEMPERATURE

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THE FULL AMOUNT OF THE AMPACITY OF THE CONDUCTOR IS DECREASED BY A PERCENTAGE DUE TO ENVIRONMENTAL FACTORS.

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THE FULL AMOUNT OF THE AMPACITY OF THE CONDUCTOR IS DECREASED BY A PERCENTAGE DUE TO ENVIRONMENTAL FACTORS.

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COMPLETE CIRCUIT

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A COMPLETE (CLOSED) CIRCUIT IS ONE THAT PROVIDES A COMPLETE FLOW OF ELECTRIC CURRENT

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ONE THAT PROVIDES A COMPLETE FLOW OF ELECTRIC CURRENT

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COMPLETE CIRCUIT

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PARTS OF A COMPLETE CIRCUIT

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1. LOAD2. SOURCE3. SUPPLY4. CONTROLLER

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SOURCE

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SUPPLIES ELECTRICAL POWER NEEDED BY THE LOAD

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SUPPLIES ELECTRICAL POWER NEEDED BY THE LOAD

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SOURCE

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LOAD

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SUPPLY CONSUMER

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SUPPLY CONSUMER

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LOAD

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COMPONENTS OF A ELECTRICAL LAYOUT

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1. SPECIFICATIONS/ GENERAL NOTES

2. LEGEND

3. LOCATION MAP

4. SCHEDULE OF LOADS

5. LIGHTING LAYOUT

6. POWER LAYOUT

7. RISER DIAGRAM

8. PANEL BOARD DETAIL

9. PANEL BLOCK

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IS A METAL SLEEVE USUALLY MADE OF COPPER THAT IS SLIPPED AND SECURED TO THE BUTTTED END OF THE CONDUCTOR IN MAKING A JOINT.

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CONNECTOR

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CONNECTOR

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IS A METAL SLEEVE USUALLY MADE OF COPPER THAT SLIPPED AND SECURE TO THE BUTTTED END OF THE CONDUCTOR IN MAKING A JOINT.

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TYPE OF CONDUIT PIPE

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1. METALLIC

- RIGID

- RIGID FLEXIBLE

2. NON-METALLIC

- RIGID

- NON-FLEXIBLE

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CONDUIT PIPE

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MOST COMMON TYPE OF RACEWAY USED

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MOST COMMON TYPE OF RACEWAY USED

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CONDUIT PIPE

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COMMON SAMPLES OF RACEWAYS

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1. CONDUITS

2. CONNECTORS AND OTHER ACCESSORIES

3. CONDUIT COUPLINGS, ELBOWS AND OTHER FILLINGS

4. METAL RACEWAYS

5. NON-METAL OTHERS

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CONDUCTOR

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DELIVERS THE POWER

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DELIVERS THE POWER

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CONDUCTOR

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CONTROLLER

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ENABLES THE FLOW OF THE CURRENT

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ENABLES THE FLOW OF THE CURRENT

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CONTROLLER

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FACTORS OF ELECTRICITY

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1. VOLTAGE

2. RESISTANCE

3. ELECTRIC CURRENT

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TYPES OF CURRENT

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1. ALTERNATING CURRENT

2. DIRECT CURRENT

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RACEWAY

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ARE CHANNELS OR WIRING DESIGNED FOR HOLDING WIRES, CABLES OR BUSBARS THAT ARE EITHER MADE OF METAL,PLASTIC OR ANY INSULATING MEDIUM.

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ARE CHANNELS OR WIRING DESIGNED FOR HOLDING WIRES, CABLES OR BUSBARS THAT ARE EITHER MADE OF METAL,PLASTIC OR ANY INSULATING MEDIUM.

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RACEWAY

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ALTERNATING CURRENT

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A CURRENT THAT CONSTANTLY REVERSES ITS FLOW OF DIRECTION

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IS A CURRENT HEADING ONLY TO ONE DIRECTION WHICH IS SAID TO BE NEGATIVE (-) TO POSITIVE (+)

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DIRECT CURRENT

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DIRECT CURRENT

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IS A CURRENT HEADING ONLY TO ONE DIRECTION WHICH IS SAID TO BE NEGATIVE (-) TO POSITIVE (+)

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Lamp

Fluorescent Lamp

Switch

2 Gang Switch

3 Gang Switch

3 Way Switch

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Convenience Outlet

Special Purpose Outlet

Air Conditioning Unit

Water Pump

Range

Service Entrance

Panel Board

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Back 58

Lighting Outlet

Circuit Breaker

Fuse

DC Ammeter

AC Ammeter

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SPST SWITCH

SPDT SWITCH

DPDT SWITCH

Circuit Homerun

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Ground

Cell

Battery

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DIAGRAM FOR VOLTAGE MEASURING

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DIAGRAM FOR CURRENT MEASURING

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DIAGRAM FOR RESISTANCE MEASUREMENT

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1 SWITCH

1 BULB

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1 BULB

2 SPDT

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1 BULB

1 4-WAY SWITCH

2 SPDT

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Front 72

EFFECTS OF ELECTRIC SHOCK TO THE HUMAN BODY

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1. ASPHYXIA

2. BURNS

3. VENTRICULAR FIBRILLATION

4. MUSCLE SPASMS

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Transformer

Resistor