electricity in home Flashcards
1
Q
what happens to the direction of alternating current?
A
changes direction
2
Q
what is main current
A
is alternating, has a Potential Difference of 230 V and a frequency of
50 Hz
3
Q
which way does direct current flow?
A
one direction only. From batteries and photovoltaic cells.
4
Q
what are the three wires in a 3 pin plug?
A
brown is live, blue is neutral, green and yellow striped
is the earth wire
5
Q
what does the earth wire protect against?
A
protects against electric shocks if there is a fault
6
Q
what is the fuse attached too?
A
attached to the live wire and melts if the current gets too high
7
Q
what are the fuse ratings? which one do you choose?
A
3, 5 and 13. Choose the fuse that is higher than the current
needed.
