Which personal contribution is worthwhile in house construction?

Well, I have an acquaintance who thought the wire was glowing because it was so red... So yeah..

And with light switches, a lot can go wrong too. Suddenly the live wire isn't switched, and before you know it, you're lying next to the ladder while changing the bulb...

Regards Joe

And if you accelerate instead of braking, you cause an accident...

So if you know which is the front and back on a Duspol and know how to handle it, then I usually see the DIYer at an advantage; usually, one is much more careful than some technician. The master doesn’t check every outlet afterwards either.

Does black and brown stand for earth and blue for water?

Therefore the duspol. Never trust the colors.

If you do everything yourself, you can also trust the colors...