Leather Protector Gloves
What standard defines leather protector gloves for electrical work?
ASTM F696-24 defines leather protector gloves and mittens as PPE worn over rubber insulating gloves and mittens, providing mechanical protection only, not electrical insulation. Many employers require leather protectors to meet ASTM F696 and match the size and class of the rubber insulating glove.
How does CSA Z462-2024’s change from 'leather protectors' to 'protectors' affect our program?
CSA Z462-2024 changed the terminology to 'protectors' to permit non-leather materials. The function remains the same: protectors are worn over rubber insulating gloves to prevent mechanical damage. You may now specify non-leather protector materials (e.g., cut-resistant fabrics) as long as they do not compromise dielectric performance, allow proper inspection, and meet mechanical protection performance. Documentation should be updated to use 'protectors (formerly leather protectors)' and reference CSA Z462-2024.
Under OSHA and CSA Z462, when can rubber insulating gloves be used without leather protectors?
OSHA 1910.137(c)(2)(vii) requires protector gloves over rubber insulating gloves but allows limited exceptions: for voltage ≤ 250 V AC or ≤ 375 V DC, Class 00 gloves may be used without protectors under limited-use conditions requiring high dexterity. Class 0 gloves (≤ 1000 V AC) can also be used without protectors under similar conditions. For other classes, they may be worn without protectors only if small parts/dexterity is critical, the employer demonstrates minimal physical damage risk, and the glove class is one higher than required. Best practice treats these as exceptions requiring documented risk assessment and re-testing of gloves after use.
Leather protector gloves are mechanical-protection PPE worn over rubber insulating (voltage-rated) gloves to prevent cuts, abrasions, snags, and punctures that could damage the rubber and compromise electrical protection. They are not rated or intended for electrical insulation. In 2024, CSA Z462 and NFPA 70E use the broader term 'protectors' to allow non-leather materials, but the function remains unchanged: protecting rubber insulating gloves used for electrical work.
On the shop floor, leather protector gloves are used as part of a standard glove system for electrical maintenance, troubleshooting, and commissioning of MCCs, switchgear, and live circuits. The system includes rubber insulating gloves (voltage-rated, e.g., Class 0-4) worn under leather protectors to provide mechanical protection against cuts, abrasions, and punctures. Workers don the rubber gloves first, then the leather protectors, ensuring proper fit to avoid bunching or stretching. This setup is essential for tasks like racking breakers, operating switches, and manipulating live conductors in tight spaces. Protectors are part of the arc-flash PPE ensemble, as specified by CSA Z462, and must be selected based on ASTM F696 standards, sized to match the rubber gloves, and inspected for damage or contamination before each use.
Using leather protector gloves as electrical protection instead of over rubber gloves, which is a critical violation as they have no voltage rating and can conduct or allow flashover.
Not using leather protectors over rubber gloves where required, or removing them for dexterity without proper controls, leading to increased risk of rubber glove damage and non-compliance with OSHA 1910.137(c)(2)(vii).
Poor condition, wrong size, or contamination of leather protectors, such as oil saturation, embedded metal particles, or incorrect sizing, which can damage rubber gloves and reduce mechanical protection.