it is an object or type of material that allows the flow of charge (electrical current) in one or more directions.

are materials that have just the opposite effect on the flow of electrons. They do not let electrons flow very easily from one atom to another.

consists of a group of wires twisted to form a metallic string. The circular mil area of it is found by multiplying the circular mil area of each strand by the total number of strand.

is the term given to an insulated stranded Wire.

a unit of length equal to 0.001 of an inch (0.0254 mm), used in measuring the diameter of wires

It is the cable between the utility pole and the consumer’s premises or building. It is an overhead electrical line from the pole to the service cap or weatherhead of a house.

is a two core conductor i.e. it has two conductors; an insulated conductor for phase line and a bare conductor for neutral line. It is used for supplying a single phase power to the building.

is a three core conductor. It has two insulated conductors for

phase line and a bare conductor for neutral line.

it is a quad or four core conductors. It has 4 conductors;

three of them are insulated conductors for phase lines and a bare conductor for neutral line. It is used for

supplying a 3 phase power supply from the utility pole to the building.

supply the power from the service weatherhead to the building. The cables

used for this purpose are 600v THHN, solid or stranded with the rating of 25% more than the maximum required load.

supply power to the main distribution junction box. It is usually black insulated THHN cables with rating of 25% more than maximum load current

are used for in-house wiring. It may consist of 2 or more than 2

insulated conductors with an insulated or bare ground conductor. There is another layer of plastic XLPE sheathing for more protection.

is the most popular choice for electrical layout inside a home. It is available in multiple gauges, color (for phase, neutral and ground identification) and solid or stranded conductors.

this type of electrical cable is designed to be used in wet locations or submersed in a liquid. The insulation used for such cables is very rugged, abrasion-resilient and extremely durable and reliable to meet the challenges present in the installation environment. They are designed to be used as direct buried cable.

is a two conductor flat cable used as a balanced line to carry radio frequency RF signal. The conductors are held apart and uniformly space by a plastic layer between them. The equal spacing is very important because it keeps the signal from distortion. The conductors are mostly stranded to avoid skin effects and they are insulated using the same plastic material.

are a type of electrical cables that can withstand continues bending in moving applications. They are used in automation industries where the machines are continuously moving such as pick and place machines and CNC based machines such engraving, milling machines etc.

It is a type of non-metallic sheathed cable designed for use in wet location such as supplying power to lamp post or street light. NM cables have a loose wrap of plastic sheath around it whereas the conductors in this cables are individually surrounded by a solid layer of thermoplastic that provide flexibility and extra protection.

are conductors suspended from electrical towers or poles to transmit power over long distance. The conductors used are completely bare and made from aluminum. The electrical and mechanical properties of the conductor depend on its construction.

Due to high voltage transmission of above 132KV over long distances, a phenomenon occurs in the conductors. High voltage ionizes the air around it which causes power loss as well as interference in the communication lines nearby.

a single, solid strand of copper the whole length of the wire.

it is composed of smaller strands of solid copper wire twisted together to form a single, larger conductor.

Contains the main feeder wires and overcurrent protective devices (OCPD)

similar to the MSP, it distributes/branches the loads to the different section or areas in the residence.

is a socket where you plug in a load

due to a conductor’s resistance manifests itself in the form of heat, and excessive heat can be damaging to a wire (not to mention objects near the wire), especially considering the fact that most wires are insulated with a plastic or rubber coating, which can melt and burn.

A conductor’s current-carrying limit is known as

its ____________.

is a metallic or nonmetallic enclosure (pipe or

channel) which is designed to hold cables, keep them safe from any mechanical stress and provide safe route for them. It includes metal and non-metal conduits, surface and underfloor raceways and busways.

 is an enclosure in shape of channel to hold, protect and provide routing for cables.

Channels made of metal or plastic (PVC) which mounted on walls and have wires running inside it, you can add more wires to it and modify the whole wiring of your facility. It’s commonly used in offices where it may need to change a plug position as the nature of work changes.

It’s the same as surface raceways but it is installed under the floor and is commonly used in buildings which contains huge servers and contains many cables.

are tubes or pipes made of metal, plastic (PVC) and can be flexible or rigid.

used in industrial and commercial applications to protect the wires which is expressed to mechanical stress and it’s very reliable in highly corrosive environment with chemicals.

this type of conduits are commonly used in residential (in walls) and also buried underground, it’s non-conductive, light, cheap, and flexible and the tight joints make it water resistant.

in case that the cables route is facing many curves and the area itself has vibrations and movements then the flexible conduit is the best as it will keep the cables safe from mechanical disturbance but it’s not recommended to be placed in corrosive environment.

Raceways, cable assemblies, boxes, cabinets, and fittings must be securely fastened in place. The ceiling-support wires or ceiling grid must not be used to support raceways and cables (power, signaling, or communications).

allow electrical equipment to connect to the electrical grid. The electrical grid provides alternating current to the outlet.

is an outlet intended for direct connection to a lamp holder, lighting fixture, or a pendant cord, terminating in a lamp holder.

is a device that open or closed the circuitry in an electric circuit.

The types of cables and wires that are used for communication or signal transmission purposes. There sole purpose is to transmit information.

This type of communication cable is made from two insulated wires twisted together to form a twisted pair. The

purpose of twisting is to reduce the electromagnetic interference or noise. They are used in Ethernet network

and telephone communication.

known by its trademark name “romex” cable is a type of electrical

cable whose outer sheath is made of plastic that protect the inside conductors. It is commonly used for

residential electrical wiring.

is most common type of armored cable used for power transmission.

are expensive and hard to route and needs special tools for cutting or ripping as compared to NM cable which is the best choice for residential wiring. They are used in power supply for large appliance and external use.

it has multiple conductors with insulated sheaths that are rolled into one jacketed cable. Its job is to avoid the messy connection by having one single cable instead of 10 or 20 separate wires and save time by connecting them one by one.

are type of electrical cable made from a pair of two insulated conductor covered by an insulation sheath. They are mostly used for DC application and also in low frequency AC applications.

It is a flexible electrical cable with connectors on both ends to provide a temporary AC power supply. it is

usually used as extension of power source for powering portable equipment, machines and devices.