When installing more than two conductors in a 50 foot run of 3-inch intermediate metal conduit, the maximum area that can be filled with conductors is ______ square inches.

To determine the maximum allowable fill area for conductors in a conduit, the National Electrical Code (NEC) provides specific guidelines based on the size and type of conduit used. For a 3-inch intermediate metal conduit (IMC), the conduit has a given fill capacity based on the diameter and the number of conductors being installed.

When installing multiple conductors, it is important to consider the maximum fill ratios allowed to prevent overheating and ensure proper functioning of the wiring system. For various sizes of conduit, including IMC, the NEC specifies the maximum conductors that can fit within an area calculated in square inches.

In this scenario, when installing more than two conductors in 3-inch IMC, the maximum fill area allowed is indeed 2.5 square inches. This figure ensures that there is adequate space within the conduit for the heat generated by the conductors to dissipate, therefore upholding safety standards.

This understanding is crucial for electrical contractors to ensure compliance with regulations and to promote safe wiring practices in their installations.