Answer :
Answer: Answer Below
Answer below
Explanation:
Some appliances - such as vacuum cleaners and electric drills - do not have an earth wire. This is because they have plastic casings, or they have been designed so that the live wire cannot touch the casing. ... These appliances have double insulation.
Some of the ceiling lights do not have an Earth wire due to the presence of insulations in plastic casings.
The given problem is based on the concept and fundamentals of insulation. An insulation is a material that is used when we need to prevent the heating due to electrical overloading or the heat transfer.
- Insulation helps to keep the temperature of desired place under the controlled situation. It provides the protection against the heat in summer and cold in winter.
- Some appliances - such as vacuum cleaners and electric drills - do not have an earth wire. This is because they have plastic casings, or they have been designed so that the live wire cannot touch the casing. These appliances have double insulation.
Thus, we can conclude that some of the ceiling lights do not have an Earth wire due to the presence of insulations in plastic casings .
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