Criterion 6.1.2.2 Protection From Ultraviolet Radiation

Criterion text:
Ultraviolet (UV) radiation shall not significantly alter the performance of any component or subcomponent of the system.

Comments:
Installers must ensure that external control related components must be either resistant to UV rays because of their chemical properties (UV inhibitors) or be protected by an external method such as a suitable paint coating, external jacket, etc.

Installers must use sensor and photovoltaic module wiring that is rated for outdoor use.

The sensor wiring shown in Figure 1 has been rated for outdoor use. In addition to this, most installers also coat the wiring with paint.

Figure 1

In the installation in Figure 2, the installer did not coat the sensor wire with any type of protective material. Since this wire was not UV resistant, deterioration and system malfunction will eventually occur.

Figure 2

Figure 3 illustrates several problems. The wiring was not only not UV protected but was also not secured.

Figure 3

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