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Ampacity of Electrical Conductors

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Questions and Answers

What is the main purpose of electrical conduits?

To support conduit couplings

To connect receptacles

To provide lighting outlets

To provide a means for running wires (correct)

Which of the following is NOT a type of metallic conduit?

Aluminum conduits

Plastic conduits (correct)

Other metallic pipes

Steel pipes

What is the purpose of a convenience outlet or attachment cap?

To establish connection between conductors (correct)

To create junction boxes

To protect the wiring system

To install lighting fixtures

What distinguishes a lighting outlet from other outlets?

It is intended for direct connection to lighting fixtures Signup and view all the answers

Which of the following is NOT an electrical raceway accessory?

Clamps and hangers Signup and view all the answers

What distinguishes between wall outlets and receptacle outlets?

Wall outlets are convenience outlets, receptacle outlets have receptacles installed Signup and view all the answers

What is ampacity in relation to electrical conductors?

The ability of the wire to carry current without overheating Signup and view all the answers

According to Section 3.1.2.1 of the National Electrical Code, what must conductors have in relation to ampacity?

Mechanical strength and load carrying ability Signup and view all the answers

Why can a small wire diameter safely carry more current in proportion to its weight?

It has lower resistance Signup and view all the answers

What determines the operating temperature of a conductor?

Current flow, wire resistance, and environment Signup and view all the answers

What are raceways used for in electrical installations?

To hold wires, cables, or busbars Signup and view all the answers

What materials are commonly used to make raceways?

Metal, plastic, or insulating mediums Signup and view all the answers