A crew is finishing a garage string inverter and rooftop disconnect on a coastal home with sun, rain, and salt spray. The foreman rejects handwritten tape flags and plain indoor stickers for field labels. The owner wants labels legible for years. Which labeling and marking approach meets durability requirements for PV field equipment?
Select an answer to reveal the explanation.
Short Explanation
Sun, rain, and salt can wear down cheap ink fast. You’ll keep labels readable longer by choosing outdoor-rated stock—your weatherproof win, like sunscreen for words.
Full Explanation
Weather-rated labels with durable print, fixed to clean, flat surfaces where they can readily be seen, suit exposed PV equipment. These features help identification remain legible through sun, rain, and coastal salt exposure over time. Permanent printing and good surface preparation do not make indoor-only stock suitable for rooftop conditions; the label itself must be rated for weather exposure. Durable weather-rated labels placed inside equipment covers are not available at the sight locations needed for ordinary identification. Weather-rated engraved tags secured with stainless fasteners may be durable and visible, but attaching tags to handles does not provide the specified fixed label on a clean, flat equipment surface; handles may also be moved or replaced. Exam caveat: exact marking and placement rules can depend on the equipment, applicable electrical code, and authority having jurisdiction, so a durable label alone may not satisfy every required marking rule. Practical check: confirm the label and adhesive manufacturers’ ratings for UV, moisture, and salt exposure, then inspect representative installed labels for legibility, adhesion, and visibility from the normal approach.