DEE40223 Low Voltage Distribution Topic 1

What is the definition of a switchboard according to Regulation 2?

• An assembly of switchgear with or without instruments

• A type of circuit breaker

• An assembly of local switches

• A device that generates electricity

What must always equal the power going out to the loads in a switchboard?

• The insulation resistance

• The current rating of the switchboard

• The voltage of the switchboard

• The power going into the switchboard

What is the minimum thickness of the enclosure structure for a switchboard?

• 1.5mm

• 2.0mm

• 2.5mm

• 3.0mm

What degree of protection is required for the enclosure of a switchboard as per IEC 529?

• IP 40

• IP 41

• IP 20

• IP 30

What is the purpose of anti-condensation heaters in a switchboard?

• To enhance insulation

• To prevent moisture accumulation

• To increase voltage

• To reduce power loss

What is the required sensitivity for the residual current device protecting the heating system?

• 10mA

• 100mA

• 30mA

• 50mA

What should be the degree of protection for exposed parts within the assemblies?

• IP 40

• IP 10

• IP 30

• IP 20

What is the time value of the rated short-time withstand current for switchgear?

• 3 seconds

• 1 second

• 0.5 seconds

• 2 seconds

What is the purpose of the rubber mat placed in front of every switchboard?

• To improve visibility

• To enhance aesthetics

• To prevent electric shock

• To provide insulation

What is the minimum requirement for a person to access any part of the switchboard?

• Must be a supervisor

• Must be trained in first aid

• Must be a licensed electrician

• Must be a competent person