How many #14 AWG wires can be run in 3/8" FMC?

The maximum number of #14 AWG wires that can be run in 3/8" flexible metal conduit (FMC) is determined by the conduit fill requirements set by the National Electrical Code (NEC). When calculating conduit fill, it's important to consider the cross-sectional area of the conduit and the dimensions of the individual wires.

For a 3/8" FMC, the usable space is specified in the NEC, allowing a specific number of conductors based on their size. In this case, #14 AWG wire has a certain diameter, and when assessing conduit fill, the total cross-sectional area of the wires must be kept within a certain limit to allow for safe operation and heat dissipation.

In general, for a 3/8" FMC, it is indicated that up to four #14 AWG conductors can fit without exceeding the fill limit, thereby ensuring safety and compliance with electrical codes. This means that four wires can be run through the conduit without concern for overheating or electrical inefficiency due to overcrowding.