What does 'support spacing' pertain to in raceway installations?

Support spacing in raceway installations refers specifically to the distance between supports that secure the raceway to structures like walls or ceilings. Proper support spacing is crucial because it helps ensure that the raceway can adequately hold the weight of the conductors inside and maintain the integrity of the installation over time. If the supports are too far apart, the raceway may sag or become damaged, which could lead to increased wear on the conductors and potential safety hazards.

This concept is important in compliance with electrical codes and standards, which dictate specific requirements for support spacing based on the type of raceway used and its application. For instance, rigid conduits have stricter support spacing than other types. This understanding of support spacing is essential for maintaining both the functionality and safety of electrical installations.