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fuses the simplest thing to do is to take out the old fuse and try a
substitute fuse of the correct amp rating, of course. Then test the
appliance, with reliable fuses look for wire breaks or scorch marks
on the fuse carriers. Remove the old wire, fit new wire round the
retaining screws and tighten the screws. Replace the fuse carrier
and see if the appliance works. If a fuse continues to blow, do not
fit another fuse, but get an electrician to check the appliance and
the circuit for possible faults. Never attempt to use a fuse of a
higher rating.

GATHERING INFORMATION

Step 1
From Input, find answers to these questions :

1. What does a fuse do?
2. What are the three types of circuit protection?
3. Where are fuses located in a circuit?
4. How should you check a cartridge fuse?
5. What tells you whether a reliable fuse has blown?
6. What is the first thing to do when checking a main fuse?
7. What should you do if a new fuse blows immediately?

Step 2

Replace the words and expressions in bold type with ones of
similar meaning from the Input.
a) When a rewirable fuse blows, it burns the carrier.
b) Always switch off, before examining the main fuses.
c) When you have put the fuse back, try the appliance again.
d) There is probably something wrong with the circuit, if the fuse
blows again.
e) With a reliable fuse you must take out the old wire, then put
new wire round the screws and do up the sewers.

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