Raceways or cable trays containing electric conductors shall not contain any pipe or tube for service other than _____.

Raceways or cable trays that contain electric conductors are designed specifically to manage and protect these conductors from physical damage, environmental factors, and to ensure safe electrical installation practices. According to the National Electrical Code (NEC), the only service allowed to be run in conjunction with conductors within raceways or cable trays is electrical service itself.

When other types of services, such as gas, drainage, or liquid lines, are introduced into the same raceway or cable tray, it can create multiple issues. For instance, the presence of non-electrical services can lead to potential hazards, like chemical reactions, leakage, or contamination that may affect the integrity of the electrical conductors and pose safety risks.

Furthermore, having only electrical conductors in these installations maintains compliance with the NEC’s safety standards, ensuring that the pathways are dedicated to electrical use and do not have conflicting requirements or risks posed by combining different utility types. This clear delineation helps prevent code violations and enhances overall electrical safety.