Otis Singleton
Electrical gloves are an essential form of personal protective equipment (PPE) for workers in industries where they may come into contact with electrical hazards. The Occupational Safety and Health Administration (OSHA) requires workers to wear electrical insulating gloves for any work exceeding 50 volts. Electrical gloves are categorised by their maximum voltage tolerance, with Class 00 gloves offering the lowest protection and Class 4 gloves offering the highest. These gloves are typically made of rubber and provide protection against shock and electrocution. Before each use, it is crucial to inspect the gloves for any defects, such as holes or tears, and to air test them to ensure they are still functional.
| Characteristics | Values |
|---|---|
| Glove material | Rubber |
| Glove type | Insulating |
| Classes | 00, 0, 1, 2, 3, 4 |
| Class 00 proof test voltage | 2,500V AC and 10,000V DC |
| Class 0 proof test voltage | 5,000V AC and 20,000V DC |
| Class 1 proof test voltage | 10,000V AC and 40,000V DC |
| Class 2 proof test voltage | 20,000V AC and 50,000V DC |
| Class 3 proof test voltage | 30,000V AC and 60,000V DC |
| Class 4 proof test voltage | 40,000V AC and 70,000V DC |
| Class 00 protection | Up to 500V AC and 750V DC |
| Class 0 protection | Up to 1,000V AC and 1,500V DC |
| Class 1 protection | Up to 7,500V AC and 11,250V DC |
| Class 2 protection | Up to 17,000V AC and 25,500V DC |
| Class 4 protection | Up to 36,000V AC and 54,000V DC |
| Minimum voltage requiring gloves | 50 volts |
| Testing frequency | Every 6 months |
| Pre-use test | Air test |
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What You'll Learn
- Electrical gloves are necessary for any work exceeding 50 volts
- Gloves are categorised by the maximum voltage they can withstand
- They are divided into classes, with Class 00 being the lowest and Class 4 the highest
- Gloves are tested at higher voltages than their rating
- Leather protectors are worn over rubber gloves to prevent cuts and punctures
Electrical gloves are necessary for any work exceeding 50 volts
Insulated rubber gloves are categorized by the maximum voltage they can withstand, with Class 00 being the lowest and Class 4 being the highest. The gloves are tested at higher voltages than their rating, so you can be sure they are safe. For example, Class 00 gloves are proof-tested at 2,500V AC and 10,000V DC but are only approved for a maximum use of 500V AC. Class 0 gloves are proof-tested at 5,000V AC and 20,000V DC and are approved for a maximum use of 1,000V AC.
It is important to note that the voltage of the work being done will determine the class of gloves required. For example, Class 0 gloves are typically used for low-voltage applications, while Class 2 gloves are rated for a maximum of 17,000V AC. If you are working with voltages above 1,000V, you will need a higher class of gloves.
Before using electrical gloves, it is important to inspect them for any damage. This includes a visual inspection for cuts, holes, and discoloration. If the gloves pass the visual test, an air test can be performed by inflating the glove and listening for escaping air, which indicates a puncture. It is also important to note that electrical gloves should be field-tested before every use and lab-tested every six months.
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Gloves are categorised by the maximum voltage they can withstand
Insulated rubber gloves are classified based on the maximum voltage they can withstand. Gloves with a higher voltage rating tend to be thicker. ASTM D120 Gloves, for instance, are classified by the American Society for Testing and Materials, which is the world's largest source of standards for materials and goods.
The gloves are categorised into classes ranging from Class 00, which is the lowest, to Class 4, which is the highest. Class 00 gloves are commonly used in systems where the AC voltage does not exceed 500V. They are proof-tested at 2,500V AC and 10,000V DC. Class 0 gloves are used when the AC voltage does not exceed 1,000V. They are proof-tested at 5,000V AC and 20,000V DC.
Class 1 gloves are proof-tested at 10,000V AC and 40,000V DC, while Class 2 gloves are proof-tested at 20,000V AC and 50,000V DC. Class 3 gloves are proof-tested at 30,000V AC and 60,000V DC, and Class 4 gloves are proof-tested at 40,000V AC and 70,000V DC.
It is important to note that gloves should be inspected for damage before each use and after any incident that may have caused damage. Field testing should be done before every use, and lab testing is required every 6 months.
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They are divided into classes, with Class 00 being the lowest and Class 4 the highest
Insulated rubber gloves are categorised by the maximum voltage they can withstand. They are divided into classes, with Class 00 being the lowest and Class 4 being the highest. Class 00 gloves are proof-tested at 2,500V AC and 10,000V DC, while Class 4 gloves are proof-tested at 40,000V AC and 70,000V DC. The higher the class, the thicker the glove, as higher voltages require more protection.
The class of glove required depends on the voltages you will be encountering. Class 00 and Class 0 gloves are typically used for low-voltage applications, while Class 1 through 4 are considered high-voltage gloves. Class 0 gloves are commonly used in systems where the AC voltage does not exceed 1,000V, and they are proof-tested to 5,000V AC. Class 2 gloves are proof-tested to 20,000V AC and are approved for a maximum use voltage of 17,000V AC.
The gloves are tested at higher voltages than they are rated for. The exact amount depends on the class of gloves being tested. If the voltage passes through the glove, the glove fails the test and is removed from service. Field testing should be done before every use, and lab testing is required every 6 months. Field testing involves a visual inspection for cuts, holes, and discolouration, followed by an air test to check for leaks.
Leather protector gloves are worn over rubber insulating gloves to provide protection against cuts, abrasions, and punctures, and arc flash. They do not provide any electrical protection and cannot be worn alone.
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Gloves are tested at higher voltages than their rating
Electrical gloves are categorized by the maximum voltage they can withstand. They are divided into classes, with Class 00 being the lowest and Class 4 being the highest. The gloves are tested at higher voltages than their rating to ensure safety.
For instance, Class 00 gloves are proof-tested at 2500V AC and 10,000V DC but are approved for a maximum use voltage of 1000V AC. Similarly, Class 0 gloves are proof-tested at 5000V AC and 20,000V DC but are approved for a maximum use voltage of 1000V AC. As the classes increase, so does the voltage they can withstand, with Class 4 gloves being proof-tested at 40,000V AC and 70,000V DC.
The higher the class of glove, the thicker they become, and more considerable clearing distances are needed with higher voltages. Electrical gloves are also available in different cuff styles, with straight cuffs being the most common for lower classes and dual-colour gloves being typical for the higher classes.
It is important to note that electrical gloves should be tested regularly, with field testing done before every use and lab testing required every 6 months. This is to ensure the integrity of the material and the safety of the user.
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Leather protectors are worn over rubber gloves to prevent cuts and punctures
Leather protectors are essential in preventing damage to rubber gloves, which can easily occur. The slightest cut, puncture, or nick can render a rubber glove useless. Therefore, it is imperative to inspect rubber gloves before each use and send them for electrical re-testing if they have been used without leather protectors. Leather protectors are also necessary to protect against electric shock and arc flashes.
There are different classes of electrical gloves, with Class 00 being the lowest voltage rating and Class 4 being the highest. The gloves are tested at higher voltages than their rating, and they must pass the test to be used. For example, Class 0 gloves are proof-tested at 5,000 volts AC and approved for a maximum use voltage of 1,000 volts AC. In contrast, Class 2 gloves are proof-tested at 20,000 volts AC and approved for a maximum use voltage of 17,000 volts AC.
It is important to note that in specific situations requiring maximum dexterity, leather protectors may not be necessary. However, these exceptions should be rare, and it is always crucial to ensure that voltage-rated gloves are in good condition and properly tested.
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Frequently asked questions
Yes, electrical gloves are always necessary when working with electrical components. They are the first line of defense and provide protection against shock and electrocution.
The Occupational Safety and Health Administration (OSHA) requires workers to wear electrical insulating gloves for any work exceeding 50 volts.
The class of electrical gloves you should use depends on the maximum voltage you will be exposed to during work. Classes range from Class 00 (lowest protection) to Class 4 (highest protection). For example, Class 0 gloves are suitable for a maximum voltage of 1,000V AC and 1,500V DC, while Class 4 gloves offer protection up to 36,000V AC and 54,000V DC.
