Ujian Penebatan dan Pendawaian

What is the purpose of insulation testing?

• To test the mechanical strength of cables

• To prevent current leakage

• To reduce voltage

• To increase current

What tool is used for cable insulation testing?

• Megger

• Multimeter

• Clamp meter

• Test pen

What is the purpose of earth continuity testing?

• To test overload current

• To ensure the earth connection is functioning

• To measure voltage

• To test load resistance

What tool is used to measure electric current?

• Voltmeter

• Ammeter

• Ohmmeter

• Megger

What is the purpose of short circuit testing?

• To ensure there is no direct phase-neutral connection

• To test load power

• To determine voltage levels

• To measure cable temperature

If the earth resistance is too high, what will happen?

• Reduce the risk of shock

• Increase the risk of electric shock

• Reduce voltage

• Disconnect the circuit

What is the first step before performing wiring maintenance?

• Install a new load

• Disconnect the power supply

• Test the cables

• Install MCB

When performing voltage testing, ensure that:

• The power supply is turned off

• The power supply is turned on

• The cables are earthed

• The MCB is removed

What tool is used to test circuit continuity?

• Megger

• Multimeter

• Test pen

• Ammeter

What is the purpose of polarity testing?

• To ensure phase and neutral are correct at the socket

• To test load current

• To measure cable resistance

• To test earth voltage