How are temporary power installations treated with regard to code?

• A. They must be installed using permanent wiring methods.
• B. They may be permanent if permitted by the electrical plan.
• C. They require no inspection and can be left indefinitely.
• D. They must use approved temporary wiring methods and be removed when no longer needed.

Answer: (D)

Temporary power installations are addressed by the code under temporary wiring rules. They must be installed using approved temporary wiring methods—equipment and wiring specifically listed for short‑term use—and must be removed when they are no longer needed. This keeps temporary solutions from becoming permanent setups that could pose ongoing hazards. Permanent wiring methods are not suitable for temporary power, and leaving temporary power in place indefinitely undermines safety. In practice, these installations are meant to be temporary, finished, and removed once the work or event is over, with any required permits or inspections handled by the authority having jurisdiction.