For temporary installations, the NEC® requires that receptacles be ___.

For temporary installations, the NEC® requires that receptacles be ___.

• A. Made of insulating plastic
• B. Protected at not less than 30 amps
• C. Of the grounding type
• D. All of these

Answer: (C)

Temporary installations require a reliable grounding path for safety. The NEC specifies that receptacles used in temporary setups be grounding type, meaning they have a grounding connection (three-prong) so fault current has a path back to the source and can trip the protection device, reducing the risk of shock. The other options aren’t NEC requirements for temporary receptacles—they don’t have to be made of insulating plastic, and there isn’t a blanket rule that they must be protected at not less than 30 amps (circuit protection varies and typical receptacles are 15 or 20 amps). So the grounding-type receptacle is the correct requirement.

Temporary installations require a reliable grounding path for safety. The NEC specifies that receptacles used in temporary setups be grounding type, meaning they have a grounding connection (three-prong) so fault current has a path back to the source and can trip the protection device, reducing the risk of shock. The other options aren’t NEC requirements for temporary receptacles—they don’t have to be made of insulating plastic, and there isn’t a blanket rule that they must be protected at not less than 30 amps (circuit protection varies and typical receptacles are 15 or 20 amps). So the grounding-type receptacle is the correct requirement.