Heating System Connections and Joints

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What type of joint is designed to be buried in the ground?

A joint designed to be buried in the ground (correct)

A connection between a cold tail and the heating element

A compound-filled or encapsulated joint

A joint made by welding

What is a characteristic of a joint made by welding, soldering, brazing or appropriate compression tool?

It is designed to be buried in the ground

It is maintenance-free

It must be inspected regularly

It is not accessible for inspection (correct)

What does the symbol (MF) indicate on a product?

It is a low-voltage accessory

It is a maintenance-intensive accessory

It is a high-risk accessory

It is a maintenance-free accessory (correct)

What is an exception to the accessibility requirement for inspection, testing, and maintenance?

A connection between a cold tail and the heating element Signup and view all the answers

What is true about equipment complying with BS 5733 and marked with the symbol (MF)?

It is installed in accordance with the manufacturer's instructions Signup and view all the answers

What type of connector is used in high-temperature applications?

Porcelain connectors Signup and view all the answers

What is a crucial factor in selecting termination points?

Current rating Signup and view all the answers

Where are porcelain connectors often found?

Appliances and luminaries Signup and view all the answers

What type of terminal is used to connect fixed wiring to a totally enclosed fitting?

Porcelain connector Signup and view all the answers

What is the purpose of a claw washer?

To secure a screw head Signup and view all the answers

What is the process of erosion?

The wear away of solids due to friction or movement Signup and view all the answers

What can cause sparking and flashing in contacts?

Faulty and high resistance contacts Signup and view all the answers

What happens to contacts when they open and close?

They may become worn Signup and view all the answers

What is a result of erosion?

The loss of material Signup and view all the answers

What is a primary requirement for every connection between conductors or between a conductor and other equipment?

To provide durable electrical continuity and adequate mechanical strength and protection Signup and view all the answers

What type of contacts can cause surges?

Faulty and high resistance contacts Signup and view all the answers

What factor should be considered when selecting the means of connection?

The material of the conductor and its insulation Signup and view all the answers

Why is it necessary to consider the temperature attained at the terminals in normal service?

To prevent the insulation from being damaged Signup and view all the answers

What is a specific consideration for soldered connections?

The design should take account of creep, mechanical stress, and temperature rise under fault conditions Signup and view all the answers

What is a common characteristic of terminals without the marking R, F, S, or Sol?

They can be used with all types of conductors Signup and view all the answers

Why is it necessary to provide adequate locking arrangements in certain situations?

To prevent the connection from coming loose due to vibration or thermal cycling Signup and view all the answers

What type of conductor is marked with an 'R'?

Rigid Conductor Signup and view all the answers

What type of conductor is marked with an 'F'?

Flexible Conductor Signup and view all the answers

What type of conductor is marked with an 'S' or 'Sol'?

Solid Conductor Signup and view all the answers

What is true about terminals with specific markings (R, F, S, or Sol)?

They can only be used with the marked type of conductor Signup and view all the answers