What is the maximum equivalent of bends allowed in a run of EMT?

The maximum equivalent of bends allowed in a run of EMT (Electrical Metallic Tubing) is four quarter bends. This maximum is outlined in the National Electrical Code (NEC) to ensure that the installation remains accessible and that conductors can be pulled through the conduit without excessive difficulty.

Each quarter bend is a 90-degree turn, and the code limits the number of total bends to prevent complications in conduit runs that could lead to increased resistance or make wire installation more challenging. In practice, having more than four quarter bends could significantly obstruct wire pulling, making installation impractical or even unsafe. Therefore, adhering to the limit of four quarter bends helps maintain efficient electrical installations.

Understanding this constraint is crucial for electricians and those involved in electrical work, as it directly relates to code compliance and the overall functionality of electrical systems.