EU1- MODULE 2: BUILDING ELECTRICAL MATERIALS AND FUSE – an overcurrent protective device with a circuit
EQUIPMENT opening fusible part that is heated a severed by the
passage of overcurrent through it,
POWER STATION – an industrial facility that houses the
prime mover, electric generator … GENERAL CLASSIFICATION OF FUSES
- It is a facility or system for generation of 1. CARTRIDGE FUSE – it is enclosed in insulating tube.
electric power.
2. PLUG FUSE – it is enclosed in porcelain or rubber
BUILDING ELECTRICAL SERVICE EQUIPMENT commonly used in electrical appliances.
SERVICE ENTRANCE CONDUCTORS – conductors that 3. FUSE WIRE – opened wire of low melting point
carry power from the transformer. commonly used in the safety power switch.
SERVICE DROP – overhead wires extend from a pole- 4. NON-TIME DELAY FUSE – holds five times its rating for
mounted distribution transformer to the building’s ¼ to 2 seconds (not ideal to loads which requires
service entrance. more than 2 seconds to accelerate).
SERVICE LATERAL – underground (buried) service 5. DUAL-ELEMENT TIME DELAY FUSE – holds five times
entrance conductors. the rating for 10 seconds.
SERVICE ENTRANCE – includes components that PEC – PHILIPPINE ELECTRICAL CODE
connect utility-supplied wiring (service lateral or
service drop) to service disconnect, excluding the OVERCURRENT PROTECTION DEVICES 2 CURRENT
utility’s metering equipment. RATINGS:
SERVICE ENTRANCE EQUIPMENT – receives the service 1. OVERCURRENT RATING – highest current it can carry
entrance conductors continuously without exceeding a specific
temperature limit.
SERVICE DISCONNECT – is a required part of the
service entrance equipment that allows electrical 2. INTERRUPTING CAPACITY – it is the current that a fuse
service from the utility company to be switched off. is able to interrupt without being destroyed or causing
electric arc with unacceptable duration.
- Disconnects power to the building installation.
- Set of fuses or a circuit breaker. UTILIZATION EQUIPMENT AND DEVICES
SWITCHBOARD – is a large cabinet or assembly of UTILIZATION EQUIPMENT – is a broad category of
metal cabinets in which is connected disconnecting electrical or electronic machine or instrument
switches, overcurrent protection devices (fuses or designed to perform a specific mechanical,
circuit breakers)… chemical, heating, or lighting function through the
use of electrical energy.
PANELBOARD – is one or more metal cabinets that
serve as a single unit, including buses, automatic ELECTRIC APPLIANCE – it is an end-use piece of
overcurrent protection devices. utilization equipment designed to perform a specific
function such as cooking, cleaning, cooling, or
- It is equipped with or without switches for the heating.
control of light, heat, and power circuits.
ELECTRICAL DEVICE- is a component in an electrical
TRANSFORMERS – are used in transmitting and system that is designed to carry but not use electricity.
distributing power from the power plant to a
substation. - Includes switches, receptacles, and relays.
OVERCURRENT PROTECTION (OCD) DEVICES – they OUTLETS, RECEPTACLES, AND PLUGS
safeguard the building service or an individual circuit OUTLET – the location in a branch circuit where
from excessive current flows. electricity is used.
- Fuse and circuit breakers serve as automatic RECEPTACLE – it is a female connecting device with
overcurrent protection devices. slotted contacts.
CIRCUIT BREAKER – is a device designed to open (or PLUG – it is a male connecting device that has two or
trip) and close a circuit by non-automatic means and more prongs that are inserted into a receptacle to
to open the circuit automatically on a predetermined connect to an electrical circuit.
overcurrent without damage to itself when properly
applied within its rating.
EQUIPMENT opening fusible part that is heated a severed by the
passage of overcurrent through it,
POWER STATION – an industrial facility that houses the
prime mover, electric generator … GENERAL CLASSIFICATION OF FUSES
- It is a facility or system for generation of 1. CARTRIDGE FUSE – it is enclosed in insulating tube.
electric power.
2. PLUG FUSE – it is enclosed in porcelain or rubber
BUILDING ELECTRICAL SERVICE EQUIPMENT commonly used in electrical appliances.
SERVICE ENTRANCE CONDUCTORS – conductors that 3. FUSE WIRE – opened wire of low melting point
carry power from the transformer. commonly used in the safety power switch.
SERVICE DROP – overhead wires extend from a pole- 4. NON-TIME DELAY FUSE – holds five times its rating for
mounted distribution transformer to the building’s ¼ to 2 seconds (not ideal to loads which requires
service entrance. more than 2 seconds to accelerate).
SERVICE LATERAL – underground (buried) service 5. DUAL-ELEMENT TIME DELAY FUSE – holds five times
entrance conductors. the rating for 10 seconds.
SERVICE ENTRANCE – includes components that PEC – PHILIPPINE ELECTRICAL CODE
connect utility-supplied wiring (service lateral or
service drop) to service disconnect, excluding the OVERCURRENT PROTECTION DEVICES 2 CURRENT
utility’s metering equipment. RATINGS:
SERVICE ENTRANCE EQUIPMENT – receives the service 1. OVERCURRENT RATING – highest current it can carry
entrance conductors continuously without exceeding a specific
temperature limit.
SERVICE DISCONNECT – is a required part of the
service entrance equipment that allows electrical 2. INTERRUPTING CAPACITY – it is the current that a fuse
service from the utility company to be switched off. is able to interrupt without being destroyed or causing
electric arc with unacceptable duration.
- Disconnects power to the building installation.
- Set of fuses or a circuit breaker. UTILIZATION EQUIPMENT AND DEVICES
SWITCHBOARD – is a large cabinet or assembly of UTILIZATION EQUIPMENT – is a broad category of
metal cabinets in which is connected disconnecting electrical or electronic machine or instrument
switches, overcurrent protection devices (fuses or designed to perform a specific mechanical,
circuit breakers)… chemical, heating, or lighting function through the
use of electrical energy.
PANELBOARD – is one or more metal cabinets that
serve as a single unit, including buses, automatic ELECTRIC APPLIANCE – it is an end-use piece of
overcurrent protection devices. utilization equipment designed to perform a specific
function such as cooking, cleaning, cooling, or
- It is equipped with or without switches for the heating.
control of light, heat, and power circuits.
ELECTRICAL DEVICE- is a component in an electrical
TRANSFORMERS – are used in transmitting and system that is designed to carry but not use electricity.
distributing power from the power plant to a
substation. - Includes switches, receptacles, and relays.
OVERCURRENT PROTECTION (OCD) DEVICES – they OUTLETS, RECEPTACLES, AND PLUGS
safeguard the building service or an individual circuit OUTLET – the location in a branch circuit where
from excessive current flows. electricity is used.
- Fuse and circuit breakers serve as automatic RECEPTACLE – it is a female connecting device with
overcurrent protection devices. slotted contacts.
CIRCUIT BREAKER – is a device designed to open (or PLUG – it is a male connecting device that has two or
trip) and close a circuit by non-automatic means and more prongs that are inserted into a receptacle to
to open the circuit automatically on a predetermined connect to an electrical circuit.
overcurrent without damage to itself when properly
applied within its rating.
