This procedure includes steps for performing a Long Term or Multi-Visit Tag Out on a residential job site where an issue can't be resolved in one visit, or when a return visit is required to complete a task.

Tag Out devices are used to secure de-energized solar systems during multi-visit residential service work to prevent accidental re-energization between visits that could cause electrical shock, arc flash, or system damage. You can identify the need to leave a Tag Out in place based on the following common scenarios:

• New roof installation. Panel modules must be removed for a full roof replacement to allow a roofing contractor/roofing crew to safely do their jobs, which can take multiple days or weeks. Tag Out prevents the energization of exposed wiring during roof demolition and replacement.
• Roof repairs or inspections. Panels must be removed to allow access to repair the damaged area. Additional time for repairs to cure and/or re-inspection make a long-term Tag Out important to secure vulnerable components and to protect work crews.
• Solar Panel Module replacement. If a faulty panel is removed, a replacement module installation requires a return trip. This procedure avoids imbalance or faults that are more common in partial systems, and maintains a safe work environment for replacement.
• Inverter repairs or upgrades. Inverters disconnected for repair or replacement may require return trips for parts or testing. Long term Tag Out isolates the DC side of the system to prevent backfeeding or arc flash, and maintains a safe work environment for replacing the inverter or its parts.
• Wiring or junction box maintenance. Issues like corrosion or loose connections can require repeat visits for specialty tools or permits. Long term Tag Out secures circuits during this process
• Pest damage inspection, investigation, and/or repairs.Pests can cause damage to modules, wiring, and components, by rodents chewing cables or birds nesting on the roof. This can require multi-visit assessment, off-site analysis, and ongoing repairs. Long term Tag Out prevents energization of compromised elements during repair and vulnerability checks, and avoids the potential for imbalances or faults while maintaining a safe work environment for all individuals working on-site.
• System expansion or modification. Partial dis-assembly is required for adding panels. Long term Tag Out keeps the system offline until work is complete and can be tested.
• Diagnostic testing that requires follow-up. Initial fault-finding often requires off-site analysis and repeat visits for fixes. Long term Tag Out prevents accidental activation.
• Weather or environmental interruptions. When a job is stopped mid-service, like when it begins to rain when wires are exposed, Tag Out maintains isolation until it's safe to resume work.
• Permit or inspection delays. When a project needs approval and/or inspection between visits, Tag Out preserves a de-energized system for compliance.
• Battery storage integration or repairs. Battery disconnection tasks often have time between visits for identifying parts and receiving the parts on-site. Long term Tag Out prevents discharge/charging hazards in solar-plus-storage systems.