1. ELECTRICAL WORKS IN CONSTRUCTION
Presented by:
ENGR. PHILIP PANGILINAN, PEE/RMP/ENSE

2. LEARNING OUTCOMES
TO UNDERSTAND:
1. WHAT IS ELECTRICAL SYSTEM
2. DIFFERENT SCOPE OF ELECTRICAL SYSTEM IN
CONSTRUCTION
 ROUGHING INS – CONDUIT AND FITTING LAYOUT
 LIGHTING INSTALLATION
 POWER / RECEPTACLE INSTALLATION
 FEEDER / BRANCH CIRCUIT INSTALLATION
 TRANSFORMER INSTALLATION
 GROUNDING SYSTEM
3. CODES AND STANDARDS USED IN ELECTRICAL SYSTEM

3. WHAT IS ELECTRICAL SYSTEM?
An electrical system, within the context of a building, is a
network of conductors and equipment designed to carry, distribute
and convert electrical power safely from the point of delivery or
generation to the various loads around the building that consume
the electrical energy.

4. ELECTRICAL
INSTALLATION
INSIDE THE
BUILDING

5. ELECTRICAL CONSTRUCTION METHOD:
ROUGHING INS – CONDUIT & FITTINGS
ELECTRICAL ROUGHING INS IS THE PROCESS OF LAYING OUT OF
CONDUIT, MOUNTING OF BOXES (JUNCTION BOXES, RECEPTACLE,
PULLBOXES, SETTING OF PANELBOARDS AND CABLE PULLING.

6. ELECTRICAL CONSTRUCTION METHOD (CONT.):
LIGHTING INSTALLATION
LIGHTING INSTALLATION REFERS TO THE MOUNTING AND
CONNECTION OF LIGHTING FIXTURES WITH LIGHT
SOURCES, LIGHTING CONTROLS AND DISCONNECTING
UNITS

7. ELECTRICAL CONSTRUCTION METHOD (CONT.):
POWER / WIRING DEVICES INSTALLATION:
WIRING DEVICES INCLUDES THE SWITCHES AND
RECEPTACLE OUTLETS. RECEPTACLE OUTLETS INSTALLED
IN SUCH A WAY CONFORMES TO THE LATEST EDITION OF
PHILIPPINE ELECTRICAL CODE.

8. ELECTRICAL CONSTRUCTION METHOD (CONT.):
FEEDER / CABLE INSTALLATION:
FEEDER INSTALLATION INCLUDES THE PULLING OF
WIRES/CABLES, TERMINATION AND CONNECTION FROM
SOURCE POINT TO TERMINAL. A SINGLE LINE DIAGRAM IS
USED AS REFERENCE IN INSTALLING FEEDERS IN
ELECTRICAL SYSTEM.

9. ELECTRICAL CONSTRUCTION METHOD (CONT.):
TRANSFORMER INSTALLATION:
TRANSFORMER INSTALLATION NEEDS A VERY WELL
VERSED ELECTRICAL PRACTIONER TO SECURE SAFETY
AND FUNCTIONALITY.

10. ELECTRICAL CONSTRUCTION METHOD (CONT.):
GROUNDING SYSTEM:
GROUNDING SYSTEM IS THE MOST AND VERY IMPORTANT
INSTALLATION IN ELECTRICAL SYSTEM. GROUNDING IS THE
INTENTIONAL CONNECTION OF NON – CURRENT CURRYING
CONDUCTOR DIRECTLY BURRIED TO EARTH. GROUNDING
SHALL FACILITATE THE OVERCURRENT PROTECTION OF
THE ELECTRICAL CIRCUIT DURING THE EVENT OF
ABNORMAL CONDITION LIKE SHORT CIRCUIT AND
OVERLOAD.

11. ELECTRICAL CONSTRUCTION METHOD (CONT.):
GROUNDIN
G SYSTEM:

12. ELECTRICAL CONSTRUCTION METHOD (CONT.):
GROUNDIN
G SYSTEM:

13. CODES AND STANDARDS IN ELECTRICAL
SYSTEM:
1. PHILIPINE ELECTRICAL
CODE
2. NATIONAL ELECTRICAL
CODE
3. NFPA
4. IEEE
5. IEC

14. REFERENCES:
1. PHILIPINE ELECTRICAL CODE 2017
2. NATIONAL ELECTRICAL CODE 2020
3. NFPA 72