When laying and installing cables

You must not lay cables directly on the ground. Cables must be protected in areas where there are people, both walking past and in vehicles.
When laying cables in the ground, you must take into account other existing supply cables (or cables to be installed during the construction process).
You must always take into account other work or installations to be fitted later.
Temporary installation cables and sheathed cables can be laid in the ground at a depth of at least 35 cm. They must be covered with approved cable covers or laid in conduits.
The cable from the mains to the main cabinet must be specially protected against mechanical overload.
All extension cables must have an earth connection.