PVC Casing-Capping Wiring Materials Quiz

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Questions and Answers

What is PVC casing-capping wiring also known as?

Wooden wiring

Concealed wiring

Enclosed wiring

Open wiring (correct)

Which material is NOT required for PVC casing-capping wiring?

Capping made up of plastic

T. Joints VIR or PVC insulated wire

Junction box

Armored cables (correct)

What is the function of a Miniature Circuit Breaker (MCB) in new constructions?

Provide more power to the appliances

Regulate the water supply

Control the lighting system

Control and protect the electrical panel (correct)

What is the purpose of an ICTP (Iron Clad Triple Pole) Switch?

Isolate the supply of electricity automatically or manually Signup and view all the answers

What is used to cover the wires in PVC casing-capping wiring?

PVC capping Signup and view all the answers

What type of wiring is considered old fashioned?

Wooden casing-capping wiring Signup and view all the answers

What is the main function of a distribution board?

To divide an electrical power feed into subsidiary circuits Signup and view all the answers

What are plugs and socket outlets used for?

Connecting portable apparatus to fixed wiring Signup and view all the answers

What is the purpose of fuses in an electrical circuit?

To automatically break the circuit when overloaded Signup and view all the answers

What is the function of the fuse element in a rewirable fuse?

It is connected between the terminals of the bridge Signup and view all the answers

Why is the rewirable fuse still widely used despite its disadvantages?

It is inexpensive and simple Signup and view all the answers

What is one of the disadvantages of rewirable fuses?

The wrong size of fuse wire can be used Signup and view all the answers

What does the fusing factor represent?

The ratio of minimum fusing current to the current rating Signup and view all the answers

What determines the time for blowing out of a fuse?

The magnitude of excess current Signup and view all the answers

What is the main purpose of high breaking capacity (HBC) fuses?

To provide protection against severe short circuits Signup and view all the answers

What is NOT a disadvantage of rewirable fuses?

Prevents excessive deterioration of the fuse element Signup and view all the answers

Study Notes

PVC Casing-Capping Wiring

PVC casing-capping wiring is also known as surface wiring.
Materials like metallic conduit are NOT required for PVC casing-capping wiring.
Casing and capping cover wires for protection and aesthetics.

Miniature Circuit Breaker (MCB)

MCBs serve to protect electrical circuits from overload and short circuits, ensuring safety in new constructions.
They automatically switch off circuits in case of faults, preventing damage.

ICTP (Iron Clad Triple Pole) Switch

Designed for controlling electrical power supply, the ICTP switch is robust and suitable for high-load applications.
Provides isolation for electrical circuits and enhances safety.

Old Fashioned Wiring

The type of wiring considered old fashioned is Imperfect (or traditional) wiring, which lacks safety features and efficiency compared to modern solutions.

Distribution Board

The distribution board is used to distribute electrical power to different circuits within a building.
It houses protection devices like circuit breakers and fuses, ensuring efficient circuit management.

Plugs and Socket Outlets

Plugs and socket outlets facilitate the connection of electrical devices to the power supply.
They provide a convenient way to power appliances and tools.

Fuses in an Electrical Circuit

Fuses protect electrical circuits by breaking the connection if excessive current flows, preventing potential hazards like fires.

Rewirable Fuse

The fuse element in a rewirable fuse melts under excessive current, interrupting the flow and protecting the circuit.
Rewirable fuses are still common due to ease of replacement and cost effectiveness.

Disadvantages of Rewirable Fuses

One disadvantage of rewirable fuses is their slower response to short circuits compared to MCBs.

Fusing Factor

The fusing factor represents the ratio of the breaking capacity to the normal current rating of a fuse, indicating its reliability.

Time for Blowing Out of a Fuse

The time to blow out a fuse is determined by the amount and duration of excess current flowing through it.

High Breaking Capacity (HBC) Fuses

High breaking capacity fuses are designed to interrupt high fault currents safely, enhancing electrical safety in systems.

Non-Disadvantages of Rewirable Fuses

A non-disadvantage of rewirable fuses is their simplicity, which makes them easy to understand and use for basic applications.

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Description

Test your knowledge of PVC casing-capping wiring materials with this quiz. Explore the materials required and their use in open wiring outside the wall, including wires, plastic casing enclosures, T. Joints, junction boxes, and more.