ᐅ Question About Electrical Installation (Scope of Work)

Hello everyone,

After following the discussions here for some time, I am now posting my first question myself.

In our construction specification for electrical installation, the following items are listed:

Hallway/Entrance:
1 push-button switch controlling one lighting point from three locations
1 single socket outlet
1 off-switch for one external lighting point
1 doorbell system with door button and two-tone chime

Staircase:
1 push-button switch controlling one lighting point from four locations
1 single socket outlet

Living/Dining Room:
1 push-button switch controlling one lighting point from three locations
1 two-way switch controlling one lighting point
1 off-switch for one external lighting point
1 indicator switch controlling one external socket outlet
1 triple socket outlet
1 double socket outlet
4 single socket outlets
2 flush-mounted empty boxes with wiring for telephone or antenna without connection outlets

Kitchen:
1 two-way switch controlling one lighting point
3 double socket outlets
2 single socket outlets
1 cooker connection outlet
1 dedicated circuit for dishwasher

Toilet:
1 indicator switch controlling one lighting point
1 single socket outlet
1 off-switch for mirror cabinet lighting point

Storage Room:
1 off-switch for one lighting point
1 single socket outlet

Utility Room/Laundry/Technical Room:
1 off-switch for one lighting point
3 double socket outlets
2 single socket outlets

Bathroom:
1 indicator switch controlling one lighting point
2 single socket outlets
1 off-switch for mirror cabinet lighting point

Each Children’s Room:
1 off-switch for one lighting point
1 double socket outlet
2 single socket outlets
2 flush-mounted empty boxes with wiring for telephone or antenna without connection outlets
1 battery-powered smoke detector

Master Bedroom:
1 two-way switch controlling one lighting point
3 double socket outlets
1 single socket outlet
2 flush-mounted empty boxes with wiring for telephone or antenna without connection outlets
1 battery-powered smoke detector

Dressing Room:
1 off-switch for one lighting point
1 single socket outlet

Office:
1 off-switch for one lighting point
2 single socket outlets
2 double socket outlets

Storage Room:
1 off-switch for one lighting point
1 single socket outlet

Other:
1 heating connection without outdoor sensor, thermostat
1 equipotential bonding
2 additional local equipotential bondings for bathroom
1 dedicated circuit for washing machine
1 dedicated circuit for dryer
1 400 V (400 V) socket outlet installed beneath the meter cabinet
1 wiring for underfloor heating
1 underground cable for garage
1 off-switch for one lighting point in the attic
1 cable pre-installation for attic (for future attic conversion)

Could someone possibly share their experience on where and how we should upgrade these?

Also, what exactly does "1 push-button switch controlling one lighting point from three locations" mean? What is specifically meant by "from three locations to one lighting point"?

Thank you very much in advance and

best regards,
Masipulami

Don’t ask me how to interpret the technical specifications for your push-button switch system.

Regarding the equipment, it should be noted that this is only a minimal configuration. For example, the living/dining area has nine power outlets. If you don’t want to use multi-socket power strips, this is far too few. You need outlets for: TV, receiver, DVD/Blu-ray player, PlayStation or similar, telephone base station, hi-fi system, floor lamp, cabinet/display case lighting, chargers for mobile phone/tablet/laptop, etc.

There are only two light points—one at the coffee table and one at the dining table (I guess). Do you want wall lamps as well? Does the homeowner want to install illuminated decorations in winter, for example?

I would also recommend avoiding single power outlets wherever possible and opting for double sockets instead.
It would also be worth considering installing network cabling (which can also support the telephone). Running speaker cables for stereo or surround systems directly inside the walls? Routing cables for a wall-mounted flat screen through a recessed cable conduit inside the wall?

You can never have enough power outlets, and additional wall connections are useful too. For example, in the bathroom, the mirror cabinet could be switchable both at the sink/cabinet and from the door.

We have planned approximately 140 power outlets for 250 sqm (2,690 sq ft) of living space (including storage rooms, since we do not have a basement). In addition, there are countless ceiling spotlights plus extra outlets in ceilings and walls to at least provide the option to connect lamps.

Ok, thanks for the response. I already suspected that this is a minimal configuration. Hence my question.

140 power outlets?! That's intense. I don’t think we really need that many.

What additional costs should we expect for the extra requirements?

Your questions have largely been answered already, specifically here:

https://www.hausbau-forum.de/threads/elektroplanung-was-zu-beachten-vorgehen-erklaerungen-und-tipps.8485/

140 electrical outlets is not that unrealistic. We planned 121 outlets for a living area of 171m² (1840 sq ft).

Regards

Okay, thanks in advance. And what additional costs can one generally expect per electrical outlet? I will of course also ask my builder, but maybe someone can already provide some rough estimates.

The price varies quite a lot... generally between 30 € and 100 € per socket or empty conduit box, depending on the electrician.