A conduit run with what configuration is acceptable for pulling wire?

A conduit run with two 90° bends, two 45° bends, and two 30° bends is considered acceptable for pulling wire as it falls within the maximum allowable number of bends and angles that can make wire pulling feasible. The National Electrical Code (NEC) provides guidelines on conduit bending, which typically restricts the number of bends in a run to ensure that wire can be pulled through without excessive force or potential damage.

Specifically, the correct configuration allows for a combination of bends that provides a smoother path for the wiring. Having two 90° bends combined with 45° and 30° bends creates gentler angles, which facilitate easier wire installation. Each type of bend (45° and 30°) contributes to reducing the sharpness of the turns in the conduit, thereby making it easier to manage pulling the wire through the conduit system.

Other configurations present either too many bends or the angles might be too sharp to allow for efficient wire pulling, thus making them less practical or possibly against code.