Electrical installation is the one element of the media, which lobe most often tricks, too often poorly executed. Is worth at the beginning to plan accordingly circuits and choose a really good electrician order to prevent later problems.
Rule 1: Electricity supply installations should have several circuits.
On the one hand, so it will be less traffic in the event that one circuit ceases to work, the device connected to the other will continue to function properly.
Rule 2: The installation must have wires with a suitable cross section and fuses.
Overloading the system always happen, to protect it from damage should be installed fuses and wires that do not carry with them the risk of burnout.