Routine inspection contents of photovoltaic brackets

What is operation & maintenance (O&M) of photovoltaic (PV) systems?

This guide considers Operation and Maintenance (O&M) of photovoltaic (PV) systems with the goal of reducing the cost of O&M and increasing its effectiveness. Reported O&M costs vary widely, and a more standardized approach to planning and delivering O&M can make costs more predictable.

What are the requirements for a roof-mounted PV system?

Firefighter access according to approved plan. Roof-mounted PV systems have the required fire classification (CBC 1505.9 or CRC R902.4). Grounding/bonding of rack and modules according to the manufacturer’s installation instructions that are approved and listed.

What are the quality standards for photovoltaic modules?

Here are some key quality standards to be aware of: IEC 61215: This standard specifies the requirements for the design qualification and type approval of terrestrial photovoltaic modules suitable for long-term operation in general open-air climates. IEC 61730: This standard relates to the safety qualification of photovoltaic modules.

Do roof-mounted PV panels and modules have a fire classification rating?

Rooftop-mounted PV panels and modules have the proper fire classification rating. (CBC 1509.7.2 & CRC R908.1.2)

Why does a PV plant need a monitoring system?

Advanced operation of a PV plant such as modulating output or power factor can confound the drawing of conclusions from monitored data. A monitoring system should account for clipping of output due to high DC-to-AC ratio, interconnect limits, and called-for curtailment or any other reason.

Where should a photovoltaic circuit be located?

(CBC 1509.7.2 & CRC R908.1.2) Conduit, wiring systems and raceways for photovoltaic circuits are located as close as possible to the ridge, hip or valley and from the hip or valley as directly as possible to an outside wall to reduce trip hazards and maximize ventilation opportunities.