Photovoltaic panel line marking

What are the PV system marking and labeling requirements?

Here is a quick summary of PV system marking and labeling requirements. Section 690.5 covers the ground fault detection/interruption for the PV system and requires a warning label on the utility-interactive inverter or near the ground-fault indicator at a visible location. Most often, these labels are applied on the inverter by the manufacturer.

Do PV systems need labels and warning signs?

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: Now that we know what needs labeling, we’ll explore the PV labeling requirements that installers need to know.

What is the warning label for PV power source conductors?

The warning label required by section 690.31 (G) (3) is for wiring methods and enclosures that contain PV power source conductors. This includes exposed raceways, cable trays, boxes, and even conduit bodies, in which any of the available conduit openings are unused.

Where should a photovoltaic circuit label be located?

Covers or enclosures of pull boxes and junction boxes Conduit bodies in which any of the available conduit openings are unused The labels or markings shall be visible after installation. Photovoltaic power circuit labels shall appear on every section of the wiring system that is separated by enclosures, walls, partitions, ceilings or oors.

Where should a warning label be applied to a photovoltaic system?

When the photovoltaic system also has batteries, the same warning shall also be applied by the installer in a visible location at the batteries. IBTS INTERPRETATION: A warning label shall be applied to the Inverter or near the ground fault indicator describing the hazard that would exist in the event of a ground fault.

Do I need a label for a solar PV system?

Solar PV labeling has been simplified for the 2017 code version. Here are the labels required by the NEC and/or NFPA 1 for the typical solar installation. NEC 690.13 (B) label is required at each PV system disconnecting means. This will include combiner boxes, AC/DC switches & AC Disconnects.