A section of 1 in. liquidtight flexible metal conduit may serve as an equipment grounding conductor for circuits rated not over what amperage?

The use of liquidtight flexible metal conduit (LFMC) as an equipment grounding conductor is governed by the National Electrical Code (NEC). According to the NEC, a section of LFMC can indeed serve as an equipment grounding conductor, but there are limitations to the ampacity it can safely carry.

For a 1 inch LFMC, the maximum amperage it can be rated for while providing equipment grounding is 60 amperes. This is due to the conduit’s physical characteristics and the materials from which it is made, which dictate its ability to safely conduct electrical current without overheating or causing a failure.

Selecting this correct amperage ensures that the conduit remains within safe operational levels, reducing risks such as overheating or equipment malfunction, which can arise from exceeding the specified limit. Therefore, understanding the code requirements and limitations of conduit materials is essential for maintaining safety and compliance in electrical installations.