.. Panel box

The city-owned boxes are usually locked and opened with a key.

City workers, of course.

Talk to the electrician fixing the lights at Historical Quarter.

He has keys. Grab the keys.

You can now open the panel box with the keys.

Take the fuse from there.

There's all kinds of fuse boxes around.

Use it to open the Abandoned Store door. It has a fuse box on the left side of it.