You're right to start with Article 348 of the NEC (National Electrical Code), which covers Flexible Metal Conduit (FMC). You also correctly identified Chapter 9, Table 2, but you are missing one important part of that table.Here's how to find the answer and understand the logic:1. NEC Article 348.24 Bending - Minimum Radii

The Code says you must follow the requirements for the minimum bending radii as indicated in Table 348.24.
2.

Table 348.24 Minimum Bending Radii for Flexible Metal Conduit (FMC) This Table is broken up into two columns. The first column is for 1/2" and 3/4" FMC, and the second column is for 1", 1 1/4", 1 1/2" and 2" FMC.3. Minimum Bending Radius for Applications Requiring Flexibility

The top row of Table 348.24 deals with installations that require flexibility after installation. The Table says to use

Chapter 9, Table 2.4. Chapter 9, Table 2

This table provides the "Radius to Center of Conduit" for different sizes of conduit and different bending methods.5.

Finding the Value

Look in Chapter 9, Table 2. Find the row for "Flexible Metal Conduit (FMC)". The value in the column for 1/2" is

4 inches.

Therefore, the minimum bending radius for 1/2" FMC where the final connection requires flexibility is 4 inches.Important Considerations



The Code is the Authority

Always consult the latest version of the NEC for the most accurate and up-to-date information. Code requirements can change.

Practical Bending

While the code specifies the minimum radius, it's often wise to use a slightly larger radius if possible. This makes pulling wires easier and reduces stress on the conduit and conductors.*

Manufacturer Instructions: If the FMC is part of a listed assembly (e.g., a pre-wired fixture whip), the manufacturer's instructions may have more restrictive bending requirements. These instructions supersede the NEC minimums. Flag for review