A badly wired mains plug.
A correctly wired mains plug.
A correctly wired mains plug.
A delay fuse (top) and a fast blow glass fuse.
A 450A mains fuse.
A 450A mains fuse.
An opened 450A mains fuse showing the conducting element.
This would normally be surrounded by sand within the ceramic case.
A damaged mains cable.
A damaged mains cable.
Kettle located too near to a cooker.
Wiring chaos!
But how do you solve the problem?
A reverse connected 555 IC.
A 100µF capacitor after being reverse connected to a 12V supply.
A RCD for using outdoor electrical equipment.
An old style domestic fuse board.
An embedded thermal fuse from a mains adaptor.
These are often embedded within the transformer
and are often the reason why adaptors stop working.
An old style 2 Amp mains plug.
Such plugs did not contain a fuse and
relied on the fuse in the main fuse board for protection
An early mains plug.
Note the fuse which serves as the live pin.
In this case the fuse is rated at 3A.
Fuse wire for rewireable fuses.
Note how the thickness of the wire determines the fusing current