What is the proper order of operations when commissioning new limited-energy cabling in a panel?

• A. Energize first.
• B. Verify de-energized installation, perform continuity and insulation tests, verify polarity, make device connections, energize, and perform functional tests.
• C. Skip tests.
• D. Only test after energizing.

Answer: (B)

The main idea is to verify safety and correct wiring before applying power, then confirm the system actually operates as intended once energized. Start by ensuring the panel is de-energized and safe to work on. With power off, check that the installation is correctly laid out and wired, then perform continuity testing to confirm each conductor has a complete, intended path without opens or miswirings. Follow that with insulation testing to ensure there are no leakage paths or shorts between conductors or to ground. Verifying polarity is important to make sure conductors are connected to the proper terminals so devices will function correctly and not be harmed by reversed connections. After these checks are completed, make the device connections securely. Only then energize the panel and run functional tests to verify the control signals and devices operate as designed under power. This sequence protects personnel and equipment by catching wiring or insulation problems before energizing, and it ensures the system actually performs its intended functions during operation.