3 Phase Circuit Isolation Procedure

What is the first step in the safe isolation procedure of a 3-phase circuit?

• Locking out the circuit

• Identifying the main switch

• Testing for voltage presence

• Applying warning tags

Which of the following is used to ensure that a circuit remains de-energized during maintenance?

• Warning tag

• Voltage tester

• Lockout device

• PPE

What should be done to verify that the circuit is completely de-energized before starting work?

• Apply a warning tag

• Test for voltage presence

• Lock out the circuit

• Identify the main switch

Which type of Personal Protective Equipment (PPE) is most critical when performing electrical work on a 3-phase circuit?

• Safety goggles

• Insulated gloves

• Steel-toed boots

• Hard hat

What is the purpose of applying warning tags during the isolation of a 3-phase circuit?

• To lock the circuit

• To test the equipment

• To alert others that work is being performed

• To identify the main switch

Before using a voltage tester on a circuit, what is an important step to ensure safety and accuracy?

• Locking out the circuit

• Checking the tester on a known live source

• Applying warning tags

• Wearing PPE

Why is it necessary to gain permission before isolating a 3-phase circuit?

• To ensure that no critical processes are interrupted

• To apply warning tags

• To check the functionality of test equipment

• To identify the main switch

Which of the following is NOT a step in the safe isolation procedure of a 3-phase circuit?

• Using a hammer to break the circuit

• Identifying the main switch

• Locking out the circuit

• Testing for voltage presence

After locking out the circuit, what is the next immediate step?

• Begin maintenance work

• Remove all tools

• Test for voltage presence

• Apply warning tags

What should be checked regularly to ensure it is functioning correctly before and during the isolation of a circuit?

• The lockout device

• The main switch

• Test equipment

• Warning tags