Summary EU1- MODULE 2: BUILDING ELECTRICAL MATERIALS AND EQUIPMENT
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Course
CE 313 (EU1)
Institution
Pangasinan State University
POWER STATION – an industrial facility that houses the
prime mover, electric generator …
- It is a facility or system for generation of
electric power.
BUILDING ELECTRICAL SERVICE EQUIPMENT
SERVICE ENTRANCE CONDUCTORS – conductors that
carry power from the transformer.
SERVICE DROP...
Engineering Utilities 1- Module 2: Building Electrical Materials and Equipment
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Flashcards54 Flashcards
$9.490 sales
Some examples from this set of practice questions
1.
It is an industrial facility that houses the
prime mover, electric generator and auxiliaries for conversion
of mechanical energy, chemical energy and/or nuclear energy
into electrical energy. It is a facility or system for the
generation of electric power.
Answer: Power Station
2.
Conductors that carry power from the
transformer through a metering device
to the building’s service disconnects.
These may be overhead or
underground.
Answer: Service Entrance Conductors
3.
Overhead wires extend
from a pole-mounted distribution
transformer to the building’s service
entrance. Overhead service entrance
conductors extending from pole mounted transformer
Answer: Service drop
4.
Underground
(buried) service entrance conductors.
Answer: Service Lateral
5.
It includes the components that connect the
utility-supplied wiring (the service lateral or service drop) to the
service disconnect, excluding the utility’s metering equipment.
Answer: Service Entrance
6.
Receives the service entrance
conductors. The service equipment includes a method of
measuring power (metering equipment), a method of cutting off
power (main disconnect or switch gear), and overcurrent
protection devices (circuit breakers or fuses) that protect the
service entrance conductors.
Answer: Service Entrance Equipment
7.
It is a required part of the service
entrance equipment that allows electrical service from the utility
company to be switched off so that power is disconnected to the
building installation. It is a set of fuses or a circuit breaker that
protects the service entrance conductors.
Answer: Service Disconnect
8.
it is a large cabinet or assembly of metal
cabinets in which is connected disconnecting switches,
overcorrect protection devices (fuses or circuit breakers),
other protective devices, and instruments designed to divide
large amounts of electrical current into smaller amounts of
current used by electrical equipment.
Answer: Switchboard
9.
it is one or more metal cabinets that serve as a
single unit, including buses, automatic overcurrent protection
devices (fuses or circuit breakers). It is equipped with or
without switches for the control of light, heat, and power
circuits.
Answer: Panelboard
10.
are used in transmitting and distributing
power from the power plant to a substation. The operation of a
large commercial installation depends on power distribution
that, in turn, depends on transformers used to change
voltage, current, and phase of electrical power nearby and
within a building.
Answer: Transformers
Content preview
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.
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