Question

Raceways installed in lanes and subject to mechanical injury must be protected if less than _____ above grade.

-3 m
-2 m
-1 m
-500 mm
-This is dealt with in Rule

Answer 1

Raceways subject to mechanical injury must be protected if they are less than 2 meters above grade. Local electrical codes should be checked for the most accurate guidance on raceway installation and protection requirements.

Step-by-step explanation:

The question is concerned with the installation of raceways in lanes and the required protection if they are installed less than a certain height above grade. According to the National Electrical Code (NEC), raceways installed in areas where they are subject to mechanical injury must be adequately protected if they are less than 2 meters (approximately 6 feet 7 inches) above grade. This requirement is designed to safeguard the raceway system from physical damage.

The exact rule for this protection requirement might vary by region, as local codes and amendments can adjust the NEC guidelines. It is always best to consult the latest local electrical codes or talk to a local electrical inspector for the most precise and updated information regarding raceway installation requirements and protection.