A dropout fuse is used for high voltage distribution, simplest form of protection. I can open this the same as what would happen if the fuse blew. And if the fuse blows, your dropout fuse would come down like this.

So that's isolating using a dropout fuse, and then I can actually take the dropout fuse out of its holder.

To replace the fuse, you need to undo the end cap and remove that.

The fuse is actually inside the cardboard tube with a long lead going down.

And when you replace a fuse, you need to replace it with the same size.

The new fuse will go back in, feeding into the fuse tube.

Undo the end cap up securely, and this part here secures back there.

The wire will come in around there.

Undo up securely, and then cut off any excess length at the end before replacing the fuse into the dropout fuse holder.

Okay, to replace a dropout fuse, using a hot stick and insulated gloves, you would lift the replacement dropout fuse up, slot it into position, and then move the stick down the lower part.

Push the dropout fuse up to about the 10 or 11 o'clock position, and in a short, sharp, swift push to make contact.

And that's replaced.