What is an essential requirement for protecting PV system conductors?

The essential requirement for protecting photovoltaic (PV) system conductors is that they must be routed to prevent physical damage. This is crucial for ensuring the long-term reliability and safety of the electrical system. Proper routing minimizes the risk of mechanical stress and potential damage from environmental factors, such as weather or physical impacts, which could lead to conductor failure or electrical hazards.

In the context of PV installations, conductors are often exposed to various elements and must be protected not only for safety but also to maintain efficient operation of the system. By ensuring conductors are routed in a way that minimizes the chances of being damaged, such as avoiding sharp edges or areas with potential movement, it's possible to enhance the durability and performance of the PV system as a whole.

While labeling with warnings and using bright colors can help in identifying and alerting individuals to the presence of electrical components, these measures do not directly protect against physical damage. Additionally, exposing conductors at all times without consideration for their protection is contrary to safety standards and can lead to significant risks. Thus, the focus on routing conductors to prevent physical damage is the most critical requirement in this scenario.