PV Labeling Requirements: What Installers Need To Know

Warning labels and signs are among the most important aspects of installing solar photovoltaic (PV) systems. We’ll break down the PV labeling requirements installers need to know to ensure the system complies with national electrical standards and is safe for use.

Why Solar System Labels Are Important

Before we get into the labeling requirements for PV systems, it’s worth noting why these labels are important for installers and owners of PV systems. There’s always the danger of short circuits, arc flashes, and fires to installers and anyone nearby if they’re not careful. Labels and signage can warn workers of these dangers and encourage them to protect themselves.

They’re also crucial for maintenance and repairs of the solar PV system after installation. Maintenance and repair workers rely on up-to-date and accurate labels to ensure their safety and help them work efficiently.

Solar PV System Parts and Areas Needing Labels

We’ve established that warning labels and signs are important to PV systems. Now, we can explain where they belong. Installers should consult the National Electricians Code (NEC) regarding PV systems and any local regulations from cities and municipalities.

The basic parts of a PV system that need labels and warning signs include the following:

• Circuit breakers
• Main service
• AC section and AC sub-panels
• Back-fed breakers
• AC disconnect and AC point of connection
• DC disconnect

Labeling Requirements for Solar PV Systems

Now that we know what needs labeling, we’ll explore the PV labeling requirements that installers need to know. These warning labels should contain the following information:

• Short-circuit current
• Maximum system voltage
• Rated maximum power-point voltage
• Rated maximum power-point circuit

The labels and signs should be permanent and highly visible with contrasting colors to ensure the residents and maintenance or repair workers can find, read, and understand them. Consult the NEC to learn how big these labels and placards must be to comply.

Where To Get Solar Panel Labels and Placards

Get Solar Labels is the place to go if you need labels for a PV system. We provide high-quality engraved solar placards and permanent labels for systems built to withstand decades of outdoor conditions. Browse our selection online or contact our staff with any questions about what labels your system needs.