Preview Questions Electrician | Role Specific Skill

Question 1: According to NEC 310, when selecting a conductor for a residential circuit, how should an Electrician account for ambient temperature?

Which action should you take?

Choose only one option

Use a conductor with higher current capacity

Use only copper conductors for all circuits

Select a conductor that is rated for the expected temperature

Ignore ambient temperature

Question 2: When designing a residential circuit for lighting, how do you determine the total number of light fixtures that can be connected?

Which action should you take?

Choose only one option

By estimating based on the size of the room

By installing as many fixtures as possible regardless of the load

By relying on the manufacturer's recommendations without checking the capacity

By calculating the wattage of each fixture and ensuring the total load does not exceed the circuit's capacity

Question 3: What is the required distance between a non-grounded conductor and a metal box when installing electrical wiring?

Which action should you take?

Choose only one option

1 inch

1/2 inch

1/4 inch

1.5 inches

Question 4: What is the correct procedure for installing a three-phase electrical system in a commercial building?

Which action should you take?

Choose only one option

Use unbalanced phases for cost-saving

Use a single-phase system for simplicity

Install the three-phase wiring with balanced load distribution, ensuring that all three phases are properly connected and the system is correctly grounded

Ignore the need for balancing the phases

Question 5: When installing lighting in wet or damp locations, which NEC article provides specific guidelines?

Which action should you take?

Choose only one option

NEC 690

NEC 300

NEC 410

NEC 110

Question 6: What is the NEC standard for the installation of electrical receptacles in wet areas such as kitchens and bathrooms?

Which action should you take?

Choose only one option

Receptacles must be tamper-resistant

Receptacles must be GFCI-protected

Receptacles must be inaccessible

Receptacles must be isolated from the grounding system