ᐅ Electrical installation too expensive – oversized or just overpriced?

Created on: 5 Oct 2015 14:57
D
derelvis
Hello everyone,

We received the quotation for the electrical installation, and I had to sit down first.

So far, everything has roughly matched the values found online (excavation, surveying, structural engineering, architect fees, etc.), but the electrical installation is about twice as expensive as what is generally indicated on the internet: €23,000, while we had planned for €10,000–12,000.

On closer inspection, we noticed that the quotation seems oversized and appears to cover all possible contingencies. The final billing is based on actual usage, so I would like to get your opinion on how over-dimensioned it really is. The prices include installation.

A few items can be deducted or reduced considerably. (For example, I do not need 17 temperature controllers with displays at €100 each), which would save about €1,000 right away. Also, a network cabinet with a patch panel listed at €400 can be found for about half that price. Having 110 sockets plus 10 Schuko sockets also seems excessive to me.

There are also elements included that I have not seen elsewhere: all installations (kitchen, heating, garage), roller shutter control and connection, ventilation installation, mailbox with intercom system. Still, I cannot get the total below €15,000, let alone €10,000.

Here are my top 10 items – is this very oversized? Or am I unlikely to save much? Especially the cable lengths are about double what I see online.

Room temperature controller €104.12, 17 pcs, €1,770.04
Sheathed cable 5*1.5 mm², €1.83 per meter, 700 m, €1,281.00
Socket outlet Jung AS520, €9.25, 110 pcs, €1,017.50
Meter cabinet €856.34, 1 pc, €856.34
Sheathed cable 3*1.5 mm², €1.41 per meter, 600 m, €846.00
Mailbox system with intercom €568.49, 1 pc, €568.49
Electronic transformer €29.43, 14 pcs, €412.02
Silicone protective cap €26.10, 14 pcs, €365.40
FR bathroom light €58.38, 6 pcs, €350.28
Residual current circuit breaker €68.26, 5 pcs, €341.30
Roller shutter: programming €338.71, 1 pc, €338.71
Mycraft6 Oct 2015 08:37
Well, I don’t want to be a party pooper, but I paid less than half the price for a KNX-wired house with about 100 power outlets, of course without the additional KNX devices but including everything else like the socket inserts, distribution board with residual current device, and plenty of circuits...

However, we didn’t install an intercom system, and we did the network and satellite installation ourselves.

Looking at your breakdown, especially for the basic sheathed cable, the electrician is really charging a lot...

We also decided against using temperature controllers, and I would recommend the same as Sebastian... they simply don’t make sense in a modern house with a low-temperature heating system.
Patchwork6 Oct 2015 10:29
Hello Mycraft and Sebastian,

if you do without the temperature controllers in the individual rooms, then there is only one base temperature for the entire house (or wherever the underfloor heating is installed). Do I understand this correctly?
S
Sebastian79
6 Oct 2015 10:33
Yes and no – you can control that through the valves, but it requires time and patience.

Usually, you don’t adjust it much afterward since the temperature is nearly the same throughout. Thanks to controlled ventilation systems, it's even more consistent...
K
Komposthaufen
11 Jan 2016 15:15
Mycraft schrieb:
We also decided not to install temperature controllers, and like Sebastian, I would recommend the same... they simply don’t make sense in a modern house with a low-temperature heating system

Sense or no sense. When I look at the 2014 Energy Saving Ordinance, there doesn’t seem to be any room for discretion:

"§ 14 (2) Heating systems using water as the heat carrier must be equipped with automatic devices for room-by-room temperature control when installed in buildings"
K
Komposthaufen
11 Jan 2016 18:50
How did you manage to do that?
Mycraft11 Jan 2016 19:28
What, pay attention in school?