Introduction
Rubber insulating gloves for solar photovoltaic (PV) systems must be selected according to actual electrical exposure, not simply an inverter nameplate or a generic solar kit. Solar equipment may contain energized DC strings, AC grid connections, batteries and stored energy. Gloves supplement safe isolation, qualified-person testing, and other protective measures. OSHA 1910.137 governs electrical protective equipment in covered general-industry work; OSHA 1926.97 covers corresponding construction requirements.
Glove classes and AC versus DC ratings
Under ASTM D120-22, rubber insulating gloves are classified from Class 00 to Class 4. Class 00 is rated for maximum use at 500 V AC and 750 V DC; Class 0 at 1,000 V AC and 1,500 V DC; Class 1 at 7,500 V AC and 11,250 V DC; Class 2 at 17,000 V AC and 25,500 V DC; Class 3 at 26,500 V AC and 39,750 V DC; Class 4 at 36,000 V AC and 54,000 V DC. These are maximum use ratings, not proof-test voltages. A qualified assessment must determine actual exposure and suitability. The Salisbury Class 00 gloves and Salisbury Class 0 gloves are verified active catalog examples.
Solar PV hazards and glove selection
Sunlit PV modules may continue producing voltage when an inverter is off, and battery or utility sources may also remain energized. See Why Solar Panels Remain Energized and Understanding DC Voltage in Solar Systems. Select gloves only after identifying all energy sources, possible maximum exposure, the task, and the required safe-work method. For higher-voltage applications the E214B Class 2 gloves and insulating gloves collection illustrate other options, not a blanket recommendation for PV work.
Inspection and air testing
OSHA requires inspection before each day's use and after incidents reasonably suspected of causing damage, plus an air test of rubber insulating gloves. Inspect for holes, cuts, tears, ozone cracking, embedded material, swelling, softening, hardening, stickiness, and other defects. Remove suspect gloves from service. The G99-ES glove inflator and G100-ES glove inflator with Class 0/00 adapter can support appropriate air inspection, but do not replace electrical testing. Consult 1910.137(c)(2).
Six-month electrical retesting
OSHA Table I-5 requires rubber insulating gloves to be electrically tested before first issue and every six months after first issue, as well as when insulating value is suspect, after repair, and after use without protectors. Gloves tested but never issued cannot be placed into service unless tested within the preceding 12 months. OSHA's January 2019 interpretation clarifies that the six-month cycle continues after first issue. An air test or purchase receipt is not proof of current electrical retesting.
Protector gloves and exceptions
Leather protectors ordinarily must be worn over rubber insulating gloves to prevent mechanical damage. OSHA 1926.97(c)(2)(vii) and 1910.137(c)(2)(vii) contain narrow exceptions for certain high-dexterity tasks. For Class 00 gloves, the exception is limited to at most 250 V AC or 375 V DC and additional conditions. These exceptions do not justify routine omission of protectors in solar maintenance. Follow the governing provisions and retesting rules.
Arc-flash PPE and insulated hand tools are different
Rubber insulating gloves address electrical contact hazards; arc-rated gloves and clothing address thermal exposure and are not automatically voltage-insulating. See arc-flash PPE, face protection, and Solar Shock vs. Arc Flash Hazards. Similarly, IEC 60900 insulated tool kits and diagnostic tools have distinct functions. Neither an insulated screwdriver nor an arc-rated garment substitutes for correctly rated and tested rubber insulating gloves where required.
Storage and maintenance
Store rubber insulating gloves unfolded, away from excessive heat, light, ozone, humidity, chemicals, and physical damage. Follow manufacturer cleaning and storage directions. The canvas glove storage bag is a verified product option. OSHA's insulating gloves and sleeves guidance explains the importance of correct storage and leather protectors. See insulating glove kits for packaged equipment and electrical safety products for related categories.
Field checklist
Before work: identify all sources and maximum exposure; verify worker qualification and authorized procedure; confirm glove class, type, size and protector requirements; check electrical retest and issue status; perform visual inspection and air testing; assess separate arc-flash and other PPE requirements; remove damaged gloves; store and transport them correctly. Review Lockout/Tagout for Solar Installations and Solar Energy Safety Fundamentals.
Six recommended products
- Salisbury E0011B Class 00 gloves
- Salisbury E011B Class 0 gloves
- E214B Class 2 gloves
- G99-ES portable glove inflator
- G100-ES glove inflator and adapter
- Canvas glove storage bag
Three related Knowledge Center resources
- Solar Energy Safety Fundamentals
- Solar Shock vs. Arc Flash Hazards
- Lockout/Tagout for Solar Installations
Original sources and references
- OSHA 29 CFR 1910.137 — Electrical Protective Equipment
- OSHA 29 CFR 1926.97 — Construction Electrical Protective Equipment
- ASTM D120-22 — Rubber Insulating Gloves
- OSHA Interpretation: Glove Testing Intervals
- OSHA: Insulating Gloves and Sleeves
- OSHA 1910.333 — Electrical Safe Work Practices
Safety notice: This educational article does not authorize energized work or establish job-specific PPE. Follow qualified hazard assessment, applicable OSHA provisions, manufacturer instructions, and approved employer procedures.