Double Insulation: An electrical appliance that is double insulated does not have an earth wire fitted. The appliance is designed in such a way that the electrical parts can never come into contact with the outer casing of the device.
Angle grinders are handheld tools used for grinding and polishing. They are powered by an electric motor that spins a disc at a high speed. The size of the disc can vary from 4 to 9 inches, depending on the power of the grinder.
Smaller grinders with 4-inch or 5-inch discs spin faster and are less powerful. They are typically used for light-duty tasks such as cleaning rust or sharpening tools. Larger grinders with 7-inch or 9-inch discs spin slower but are more powerful. They are typically used for heavy-duty tasks such as cutting metal or grinding concrete.
Here is an analogy that may help you understand:
Imagine a car. The size of the engine is like the size of the angle grinder disc. A larger engine produces more power, but it also spins slower. A smaller engine produces less power, but it spins faster.
Angle grinders are a versatile tool that can be used for a variety of tasks. However, it is important to choose the right size grinder for the job. If you are unsure, it is always best to consult with a professional.
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