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A ring circuit is used in domestic wiring - Leaving Cert Physics - Question c - 2016
Question c
A ring circuit is used in domestic wiring. (i) State one advantage of using a ring circuit when wiring a house. (ii) Earthing is a safety measure included in domes... show full transcript
Worked Solution & Example Answer:A ring circuit is used in domestic wiring - Leaving Cert Physics - Question c - 2016
Step 1
State one advantage of using a ring circuit when wiring a house.
Answer
One advantage of using a ring circuit is that it allows for more efficient distribution of electrical power within a home. This setup enables the use of fewer safety devices and means that cables can carry less current, reducing the overall wiring needed and potentially lowering installation costs.
Step 2
What is meant by earthing? How does earthing contribute to safety?
Answer
Earthing, or grounding, refers to the practice of connecting the metal body of electrical appliances to the earth through a wire. This is done to ensure that in the event of a fault current, such as a short circuit, the electrical current will flow to the ground.
Earthing contributes to safety by providing a direct path for the electrical current, which prevents the build-up of voltage on the appliance. This helps to protect users from electric shock and reduces the risk of electric fires.
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