Using Electricity: Behind the Wall

why is household wiring connected in parallel?
- so that each appliance receives the full supply voltage
- if one appliance is switched off the others will remain on
What do main fuses protect?

the mains wiring from overheating and causing a fire if too large a current in drawn
what is circuit breakers?

automatic switches which trigger when too large a current is drawn
Why do circuit breakers have the advantage over fuses?

they can simply be reset and used again
what is the kilowatt-hour?

a unit of energy
what is a ring circuit?

a special type of parallel circuit which connects the sockets in the home
What is the advantages of a ring circuit?
- less current in each wire
- thinner cable can be used
- less risk of overheating

Author

crobertsonx

86372

Card Set

Using Electricity: Behind the Wall

Description

Using Electricity: Section 5- Behind the Wall

Updated

2011-05-17T18:56:15Z

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