Labels on the photovoltaic panel connection lines

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.

Where can I find a safety label for a solar photovoltaic system?

Greentech Renewables packages the most common safety labels, they are available here. This is an introductory article on permit and safety requirements for signage and labeling for solar photovoltaic systems.

Which value should be used on a PV label?

Since some PV equipment, such as certain inverters, may have multiple DC circuit inputs, the highest value present in the system shall be used on the single label. EXPLANATION: Values for maximum circuit current have been removed from the label requirements since all equipment will be marked with its rated current through its listing.

How do I identify a conductor of a PV system?

Where conductors of more than one PV system occupy the same junction box, raceway or equipment, the conductors of each system shall be identified at all terminations and splice points. Cables can be marked using UL969 approved self-laminating vinyl labels. (Figure 34) Always check local codes before defining labeling formats.

Where should a breaker be located on a PV system?

Typically used on the breaker panel. Individual breakers should also be marked. (596-00587) PV system circuit conductors shall be identified at all accessible points of termination, connection and splices.

How do I know if a wiring system has a label?

The labels or markings shall be visible after installation. All letters shall be capitalized and shall be a minimum height of 9.5 mm (3⁄8 in.) in white on a red background. Labels shall appear on every section of the wiring system that is separated by enclosures, walls, partitions, ceilings, or floors.