"Playing electricians" is fine if you just want to fix little things.

You must contact the building site manager immediately if you discover any faults or problems with the electrics.

All wiring and cables must be hung up as far as possible so that nobody can fall over them.

If a fuse has been tripped and you do not have another one exactly the same to replace it with, it is okay to use a bigger one.

Connections and similar Are very able to withstand moisture and direct contact with water as long as you tape them up well.

You should never power up cables and installations without checking whether anyone is using them.

If you are a long way from a power point, it is fine to pull out the plug by yanking on the cable.

Sawing or filing a plug is fine if there is no room for it.

Plugs must always be impact-proof.

Clear access to electrical cabinets must always be maintained.