Costs 3-phase connection
Installing a 3-phase connection costs on average between €950 and €1,450, depending on the distance to the meter cupboard, the required cabling, and whether permits are needed. A 3-phase connection (also known as three-phase power) is an electrical connection with three phase wires plus a neutral wire, making more power available for heavy appliances such as charging stations, heat pumps, and solar panels. In this price guide, you can read exactly what a 3-phase connection costs, which factors determine the price, and how to find a qualified electrician for your situation.
Table of Contents
What does a 3-phase connection cost?
Having a new 3-phase connection installed costs on average between €950 and €1,450, including VAT and labour. The exact costs for a 3-phase connection depend on the desired capacity (measured in amperes) and the distance between the meter cupboard and the main connection. Do you only want to increase the capacity of an existing connection without new cabling? Then you pay between €250 and €400.
Overview of average costs
Job | Price |
|---|---|
3-phase connection new | €950 to €1,450 |
Increase capacity | €250 to €400 |
The price of a 3-phase connection therefore differs significantly, depending on what exactly is required. Laying new cabling requires more work than simply upgrading the connection capacity at the meter cupboard.
Costs per electricity meter
Electricity meter | Connection rate (incl. VAT) | Additional length per metre (excl. VAT) |
|---|---|---|
up to 3 x 25 A | €800 | €17 |
3 x 25 A to 3 x 35 A | €750 | €17 |
3 x 35 A to 3 x 50 A | €950 | €17 |
3 x 50 A to 3 x 63 A | €1,150 | €28 |
3 x 63 A to 3 x 80 A | €900 | €28 |
The connection rates are based on a standard cable length of up to 35 metres. For longer distances, you pay extra per metre, as indicated in the 'Additional length' column. The costs for switching from 1-phase to 3-phase are therefore higher when the distance between the meter cupboard and main connection is greater. All prices mentioned include 21% VAT and labour, unless otherwise stated for the additional length rates.
Costs of 3-phase connection per capacity
The costs for a 3-phase connection differ per desired capacity, measured in amperes (A). The higher the amperage, the more power you can use for heavy appliances such as a heat pump or multiple charging stations. Most homes standardly have a connection up to 3 x 25 A, but for heavier electricity use, a higher capacity is required.
Capacity | Connection rate (incl. VAT) | Additional length per metre (excl. VAT) |
|---|---|---|
up to 3 x 25 A | €800 | €17 |
3 x 25 A to 3 x 35 A | €750 | €17 |
3 x 35 A to 3 x 50 A | €950 | €17 |
3 x 50 A to 3 x 63 A | €1,150 | €28 |
3 x 63 A to 3 x 80 A | €900 | €28 |
Price-determining factors for a 3-phase connection
The costs for a 3-phase connection vary considerably due to various factors.
Desired capacity
The higher the capacity in amperes, the more the connection rate costs. A connection up to 3 x 25 A costs €800, while an upgrade to 3 x 50 A to 3 x 80 A costs €1,150. This price difference is because higher capacities require heavier cabling and stronger equipment.
Cable length
The standard price covers cable lengths up to 35 metres. For longer distances, you pay additional costs of €17 to €28 per metre.
Current situation
If you already have a 3-phase connection and only want to increase the capacity, you are cheaper off at €250 to €400. Installing a completely new 3-phase connection in a home with only 1-phase requires more work.
Adjustments to the meter cupboard
Older homes often have a 1-phase connection with outdated fuse boxes. To switch to 3-phase, the main switch must be replaced by a 3-phase version.
Excavation work
When upgrading to 3 x 35 A or higher, excavation work may be necessary to lay new cables from the main connection.
Monthly network costs
Upgrading to 3 x 35 A or higher increases the monthly system management costs with your network operator. With a connection up to 3 x 25 A, the monthly costs remain the same as a 1-phase connection.
Planned versus weekend work
Work during the week is standard. Professionals charge higher rates for work during the weekend. Preparation, such as ensuring the meter cupboard is accessible, also saves time and costs.
Additional costs and surcharges
Extra costs depend on your situation. At Zoofy, you do not pay call-out charges.
Additional cable length: For cable lengths above 35 metres, you pay €17 to €28 per extra metre.
Main switch replacement: If you still have a 1-phase main switch, it must be replaced.
Fuse box replacement: In older homes, it is sometimes necessary to replace the entire fuse box.
Excavation work: Necessary for certain higher capacity upgrades.
Weekend surcharge: Work during the weekend is more expensive than during the week.
How does the professional work for a 3-phase connection?
Application to network operator: The upgrade or new connection is requested via the relevant authorities. The network operator provides the connection up to the meter.
Install power group and main switch: The electrician places a power group. If you have a 1-phase main switch, it is replaced by a 3-phase version.
Upgrade connection: If necessary, the installer requests a network upgrade from the network operator.
Place RCD: After the upgrade, the residual current device (RCD) and group are placed.
Lay internal cables: The electrician lays the cables to complete the 3-phase connection.
How can you save on a 3-phase connection?
Think ahead: Calculate the power of all devices you want to use now and in the future to avoid multiple upgrades.
Choose 3 x 25 A if possible: Monthly costs remain lower at this capacity.
Good preparation: Ensure the meter cupboard is clear and accessible.
Avoid weekends: Weekday appointments are cheaper.
Book via Zoofy: You get a fixed rate upfront without call-out charges.
When do you need a 3-phase connection?
A 3-phase connection is necessary when using appliances that require more than 230 Volts or a lot of power simultaneously.
Devices requiring a 3-phase connection
Think of a charging station for electric cars, heat pump, sauna, jacuzzi, electric hob, or solar panels from 5,750 watt-peak.
Signs of overload
If fuses blow regularly when using multiple appliances, you likely have insufficient capacity.
Identify current connection
Check your meter cupboard for a 4-pole main switch or check your energy bill for '1x25 A' (1-phase) or '3x25 A' (3-phase).
Find the best electrician for a 3-phase connection
No call-out charges: You only pay for the work itself.
Fixed price in advance: Clear pricing before the job starts.
Quick booking: Book a professional directly without the hassle of quotes.
Payment via QR code: Pay only after completion and satisfaction.
Vetted professionals: All electricians are verified and skilled.
Frequently asked questions about a 3-phase connection
What is the difference between a 1-phase and 3-phase connection?
A 1-phase connection has one 230V cable. A 3-phase connection has three cables each supplying 230V, allowing for more power use.
Will I get a higher electricity bill?
No, consumption costs remain the same. Only the fixed network costs may rise if you exceed 3 x 25 A.
When do I need it for solar panels?
For installations from 5,750 watt-peak, a 3-phase connection is recommended for efficient feed-in.
What does it cost to just increase capacity?
If you already have a 3-phase connection, increasing the capacity costs between €250 and €400.
Book an electrician for a 3-phase connection
Ready to have a 3-phase connection installed? At Zoofy, you can book a professional directly, without quotes and without call-out charges. You will see exactly what it costs beforehand, and Zoofy connects you to a reliable, vetted professional. You only pay once the job is finished.