Building Utilities Amacing

3.5sq. mm #12 AWG

What is the minimum size of a THWN wire (in AWG) for lighting fixtures

2.0sq. mm#14 AWG

What is the minimum size of a THHN wire (in AWG) for lighting fixtures

3.5sq. mm #12 AWG

What is the minimum size of a THHN wire (in AWG) for General Purpose Outlets

5.5 sq. mm#10 AWG

What is the minimum size of TW, THW, or THWN wires for General Purpose Outlets

5.5 sq. mm#10 AWG

What is the minimum size of a THHN wire for Special Outlets

Panel board

A component of an electricity supply system that divides an electrical power feed into subsidiary circuits, while providing a protective over current device for each circuit in a common enclosure

Cable Tray

unit of assembly of units or sections and associated fittings forming a rigid structural system used to support cables

Reverberation

It is the persistence of sound in an enclosed space resulting from repeated reflection or scattering of sound

Refraction

Change in the direction of waves as they pass from one medium to another

Absorption

as opposed to reflecting the energy

Diffusion

process of spreading or dispersing radiated energy so that it is less direct or coherent

Decibel

In acoustics, what Is the unit of loudness level

Hertz

unit of Frequency

Siphonage

A suction created by the flow of liquid in pipes; a pressure less than the atmospheric pressure

Backpressure

A pressure within the sanitary drainage system or vent piping system that is greater than atmospheric pressure (>14.7 psi

Backflow

The flow of water or wastewater in pipes in a reverse direction from that normally intended

Flow Pressure

The pressure in the water supply pipe near the faucet or water outlet while the faucet or water outlet is wide open and flowing

75mm

What is the code-prescribed minimum drain pipe size of a water closet

Service drop

The overhead service conductor from the pole or other aerial support to and including the splices, if any, connecting to the service entrance conductors of a building.

Service lateral

underground service conductors between the street main, including any risers at a pole or other structure or from the transformers, and the first point of connection to the service entrance conductors in a terminal box or meter other enclosure, inside or outside the building wall.

Service raceway

raceways that encloses the service-entrance conductors

Electrical metallic conduit

Metal pipe into which electrical conductors may be drawn; it has a wall section thinner than a rigid metal conduit and used for both exposed and concealed work

Surface metal raceway

raceway consisting of an assembly of metal backing and capping

Cellular floor metal raceway

hollow spaces of cellular metal floors together with suitable fittings which may be approved enclosure for electrical conductors

Intermediate metal conduit

a metal raceway of circular cross-section with integral or associated couplings, connectors, and fittings approved for the installation of electrical conductors.

Metal Clad cable (Type MC)

A factory assembly of one or more conductors, each individually insulated and enclosed in metallic sheath of interlocking metal tape, or a smooth corrugated metallic tube.

Shielded Non-metallic Sheather Cable (Type SNM)

a factory assembly of two or more insulated conductors in an extruded core of moisture-resistant, flame- resistant nonmetallic material, covered with an overlapping spiral metal tape and wire shield, and jacketed with an extruded nonmetallic material resistant to moisture, flame, oil, corrosion, fungal growth, and sunlight.)

Mineral Insulated, metal sheathed cable (Type MI)

factory assembly of one or more conductors insulated with a highly-compressed refractory mineral and enclosed in liquidtight and gastight continuous copper or alloy steel sheathe

Armored Cable (Type AC)

a fabricated assembly of insulated conductors in a flexible metal enclosure.

elevator pit

That portion of the hoistway extends below the level of the bottom landing or floor to provide for overtravel and clearance for parts which requires space below the bottom of the car travel.

shaft or hoistway

vertical passageway for the car and counterweight

elevator machine room

room directly above the hoistway in which the elevator machine is housed

resistance and reactance

Resistance in alternating current (ac) also known as impedance is a combination of _____and _______.

clean-out

A device or appurtenance provided with a cap or plug with female(?) design to provide access or means of removing instructions or deposits inside pipes in vertical or horizontal installations.

Manhole

An opening constructed in any part of plumbing system, of sufficient size for a person to gain access thereto.

Travelling Cables

These are electronic cables connecting an elevator car to a fixed electrical outlet in the hoistway

Creep

is a phenomenon whereby sound travels along a curved surface

Stack

A vertical line of soil, waste or vent pipe

Riser

A water supply pipe that extends vertically one full storey or more to convey water to fixture branches or group of fixtures.

Downspout

The vertical portion of a rainwater conductor

Diffraction

The bending of the travel of sound caused by an obstacle in its path

Building Supply Pipe

In water supply system, it is the first section of water supply piping in a building after the water meter

Longitudinal

What type of wave transports energy by moving particles of the medium are moving back and forth in a leftward and rightward direction.

Transverse

a moving wave that consists of oscillations occurring perpendicular (or right angled) to the direction of energy transfer

Fixture Units

A value derived based on the load-producing characteristics of fixtures measured in terms of volume per unit time rate

Flow Rate

The volume of water used by a plumbing fixture in a given amount of time. Usually expressed in gallons per minute (gpm).

Counterweight

These are rectangular cast-iron blocks stacked in a frame and supported at opposite ends of the cables to which the car is fastened and balances the car

Ballast

dense material used as a weight to provide stability to a vehicle or structure

Buffer

In an elevator, a piston or spring device which absorbs the impact of a descending elevator car in the elevator pit

Amperes

Circuit breakers are ruled in what unit

100 watts

As per PEC, what is the maximum load given to each lighting outlet

2%

What is the minimum recommended slope percentage value for horizontal excrete drainage pipes having a size of less than 102 mm

1%

What is the minimum recommended slope percentage value for horizontal excrete drainage pipes having a size of more than 102 mm

Busbar

A heavy conductor, usually in the form of a solid copper or aluminum bar, strip or rod used for conducting, carrying, and distributing large electric currents

Grounded Conductor

A system or circuit conductor that is intentionally grounded.

Conductor

A substance that has free electrons or other charge carriers which permit charge flow when an emf (electromotive force) is applied across the substance

electrical conduit

A tube, pipe or duct enclosing and protecting electrical wires or cables

shielded cable

A cable enclosed within a metallic sheath in order to reduce the effects of external electric or magnetic fields

wire

A pliable metallic strand, twisted or woven assembly, often insulated with a dielectric material and used as a conductor of electricity

Building sewer

The part of the drainage system that extends from the end of the building drain and conveys its discharge to the public sewer, private sewer, individual sewage disposal system, or other appropriate point of disposal?

Building storm drain

part of the piping of a stormwater drainage system that begins at the connection to the building drain at a point 5 feet outside the established line of the building or structure, and that conveys stormwater to the approved point of disposal

Building Drain

That part of the lowest horizontal piping of a plumbing system which receives the discharge from soil, waste and other drainage pipes inside a building and conveys it to the building sewer/house sewer

Copper

What kind of material is used to convey refrigerant (refrigerant line) from the condenser to the fan coil unit (PCU) of a split type air conditioning unit

Masking

In acoustics, it is defined as the obscuring or covering up of one sound by another.

Focusing

is used to obtain an acoustic image in ultrasonic viewers, in the ultrasonic microscope, and in systems for acoustic holography.

Attenuation

To reduce the level (volume, loudness, energy) of an acoustical (or electrical) signal.

Amplification

the process of increasing the amplitude (or loudness) of an audio signal

Service Entrance Cable

A single conductor or multi-conductor assembly provided with or without an over-all covering, primarily used for services

Integrated Gas Spacer Cable

factory assembly of one or more conductors, each individually insulated and enclosed in a loose-fit nonmetallic flexible conduit as an integrated gas spacer cable rated at 0 – 600 volts

Messenger supported wiring

exposed support system using a messenger wire to support insulated conductors

Medium voltage cable

a single or multi-conductor solid dielectric cable rated at 2001 volts or higher

Bumper

A device other than a buffer for stopping a descending car or counterweight beyond its bottom terminal by absorbing the impact

Air Handling Unit

A packaged assembly for air-conditioning components consisting of coils, fibers, fan, humidifier, etc. which provides for the treatment of air before it is distributed to an air-conditioned space

Stack Vent

A vent stack must be extended vertically upwards and terminated at the vent stack through roof through _______

Branch Vent

a vent connecting one or more individual vents with a vent stack or stack vent.

Loop Vent

employed where two or more fixture traps are installed on a horizontal soil or waste branch.

Dry Vent

a vent pipe that is used to provide a path for air to enter the plumbing drainage system

Fixture Branch

A drain serving two or more fixtures that discharges to another drain or to a stack.

Branch Drain

That part of the lowest piping of a drainage system that receives the discharge from soil, waste and other drainage pipes inside

Diffraction

The phenomenon in sound propagation whereby a sound wave moves around an object whose dimensions are smaller than or about equal to the wavelength of the sound

Parallel Circuit

In this type of circuit, the voltage across each component is the same, equal to the source voltage and the current through each component varies according to the impedance of each element loads are connected across the lines

Series Circuit

When all parts of the circuit are electrically connected end-to-end.

Open Circuit

When its conducting elements are disconnected in such a manner as to prevent the flow of electricity.

Echo

A reflected sound reaching a listener's ear with a delay after the initial creation of sound.

THNW

Moisture and heat resistant thermoplastic, nylon coated

TNNW

Indicates a fine strand flexible wire with Thermoplastic insulation. Moisture, oil and acid resistant. Rated 105°C wet or dry.

T

Thermoplastic insulated wire

RHW

Heat Resistant Thermoplastic insulated wire

THW

Indicates a single conductor having flame-retardant, moisture and heat-resistant thermoplastic insulation. The wire is rated 75°C wet or dry.

TW

Indicates a single conductor having flame-retardant, moisture-resistant thermoplastic insulation. The wire is rated 60°C wet or dry

TFN

Indicates a thermoplastic-insulated wire. The wire is rated at a 90°C maximum operating temperature.

TNNH

Indicates a single conductor having flame-retardant and heat-resistant thermoplastic insulation with a jacket of extruded nylon or equivalent material. The wire is rated 90°C dry only.

Covered Conductor

A conductor encased in a material that is not recognized by the code as electrical insulation

Bare Conductor

A conductor having no covering or insulation

Insulated Conductor

A conductor encased in a material that is recognized by the code as electrical insulation

Waste Stack

A vertical pipe which conveys only wastewater or liquid waste free from fecal matter

Soil Pipe

pipe that conveys the discharge of water closets or similar fixtures containing fecal matter, with or without the discharge of other fixtures to the building drain or building sewer

Junction box

box with a blank cover which serves the purpose of joining different runs of raceway or cable, and provided with sufficient space for connection and branching of the enclosed conductors.

Cable Tray

unit of assembly of units or sections and associated fittings forming a rigid structural system used to support cables