NEC Solar Label Placement Guide
Solar Label Placement Guide
Learn where to place solar warning labels, PV labels, and photovoltaic placards for DC string systems, microinverter systems, and older NEC versions. This guide helps contractors and installers understand required label locations and quickly find matching part numbers.
DC String Systems Microinverter Systems NEC Reference Versions Linked Label Part Numbers
Where Solar Labels Need to Be Placed
Solar labels are commonly required at disconnects, inverters, service equipment, combiner boxes, rapid shutdown switches, meter locations, point of interconnection, and other key system components. Proper placement helps support NEC compliance, improve safety, and reduce inspection delays.
Below you’ll find placement diagrams and matching label references for different NEC versions and common PV system layouts.
2026 NEC Placement Guide (05-526)
Coming Soon
The 2026 NEC solar placement guide is in development. In the meantime, use the 2023 guides below for current reference.
Common Labels Used in 2023 DC String Systems
| Part # |
Description |
| 02-316 |
Rapid Shutdown Switch for Solar PV System |
| 03-303 |
Maximum DC Voltage of PV System Disconnect (Write-In) |
| 03-306 |
AC Disconnect Photovoltaic System Power Source (Write-In) |
| 03-308 |
Voltage Rating Label with Write-In Electrical Values |
| 03-313 |
Solar PV DC Circuit |
| 03-315 |
Photovoltaic Power Source |
| 05-108 |
Warning - Equipment Fed by Multiple Sources |
| 05-112 |
Solar PV System Equipped with Rapid Shutdown |
| 05-208 |
Direct Current Photovoltaic Power Source (Write-In) |
| 05-215 |
Warning - Electric Shock Hazard |
| 05-216 |
Warning - Power Source Output Connection - Do Not Relocate This Overcurrent Device |
| 05-219 |
AC Junction Box Warning / Caution Solar Circuit |
| 05-232 |
DC Junction Box Warning Electric Shock Hazard |
| 05-233 |
DC Combiner Box Label with Write-In |
| 05-234 |
Warning - Maximum DC Voltage of PV System (Write-In) |
| 05-235 |
Solar Inverter Warning with Write-In |
| 05-323 |
AC Disconnect |
| 05-326 |
Warning - Do Not Disconnect Under Load |
| 05-330 |
Caution Solar Circuit |
| 05-341 |
PV System kWh Meter |
| 05-342 |
Warning - Solar Electric Circuit Breaker Is Backfed |
| 05-343 |
Photovoltaic Solar Breaker |
| 05-345 |
Do Not Relocate This Overcurrent Device |
| 05-346 |
Warning - DC Conductors of This Photovoltaic System Are Ungrounded and May Be Energized |
| 05-347 |
Warning - Photovoltaic Power Source |
| 05-355 |
Warning - Photovoltaic System Combiner Panel - Do Not Add Loads |
| 05-411 |
Warning - Dual Power Supply Sources Utility Grid and PV Solar Electric System |
Common Labels Used in 2023 Microinverter Systems
| Part # |
Description |
| 02-316 |
Rapid Shutdown Switch for Solar PV System |
| 03-220 |
Caution AC Solar Voltage |
| 03-306 |
AC Disconnect Photovoltaic System Power Source (Write-In) |
| 03-315 |
Photovoltaic Power Source |
| 05-108 |
Warning - Equipment Fed by Multiple Sources |
| 05-112 |
Solar PV System Equipped with Rapid Shutdown |
| 05-215 |
Warning - Electric Shock Hazard |
| 05-216 |
Warning - Power Source Output Connection - Do Not Relocate This Overcurrent Device |
| 05-219 |
AC Junction Box Warning / Caution Solar Circuit |
| 05-307 |
Caution Multiple Sources of Power |
| 05-323 |
AC Disconnect |
| 05-326 |
Warning - Do Not Disconnect Under Load |
| 05-330 |
Caution Solar Circuit |
| 05-341 |
PV System kWh Meter |
| 05-342 |
Warning - Solar Electric Circuit Breaker Is Backfed |
| 05-343 |
Photovoltaic Solar Breaker |
| 05-345 |
Do Not Relocate This Overcurrent Device |
| 05-347 |
Warning - Photovoltaic Power Source |
| 05-355 |
Warning - Photovoltaic System Combiner Panel - Do Not Add Loads |
| 05-411 |
Warning - Dual Power Supply Sources Utility Grid and PV Solar Electric System |
Legacy NEC Placement Guides
Need an older NEC reference? These legacy placement guides are still useful for past project standards, service updates, and historical comparison.
2020 NEC Guide
DC string and microinverter placement guide with assortment pack links.
2017 NEC Guide
Placement diagrams and assortment pack references for 2017 NEC systems.
2014 NEC Guide
Older DC string and microinverter placement references for legacy projects.
2011 NEC Guide
Historical PV label placement reference for older installation standards.
2020 NEC Placement Guide Images
2017 NEC Placement Guide Images
2014 NEC Placement Guide Images
2011 NEC Placement Guide Images
Frequently Asked Questions
Where do solar labels need to be placed?
Solar labels are commonly placed on inverters, disconnects, rapid shutdown switches, combiner boxes, service equipment, meter locations, and other key PV system components.
Do placement requirements change by NEC version?
Yes. Placement requirements and exact labeling language can change between NEC versions. This page provides reference images and linked assortment packs for multiple code cycles.
What if I need help finding the right labels?
If you are unsure which labels your project needs, visit our support page or browse our solar labels category for additional guidance.
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