Install Three-Phase Power
Are you installing an EV charger, switching to a heat pump, or renovating the kitchen? We help you upgrade from single-phase to three-phase to meet future electricity needs.
When MUST you upgrade to three-phase?
In many older houses and apartments, only single-phase (230 volts) is installed. That worked well in the past, but modern homes require much more energy. Here are the most common reasons why people choose to install three-phase (400 volts):
1. EV Charger Installation
To be able to charge your EV quickly and safely at home (11 kW or higher), three-phase is a must. A single-phase charger is slow and risks overloading the system if you have other appliances running.
2. Heat Pump or Electric Boiler
Large heating systems require high power during the winter. To distribute the load evenly and avoid the main fuse blowing, a three-phase connection is a requirement.
3. New Induction Hob in the Kitchen
Modern induction hobs are extremely powerful. If you are renovating an older kitchen from a gas stove or an old single-phase stove to induction, electricians often have to route three-phase so the oven and hob can be used simultaneously at maximum power.
How does the installation work?
Upgrading to three-phase often means that we upgrade all or parts of your electrical panel, and sometimes a new supply needs to be routed in consultation with your grid company. Smista Electrical handles the entire process from pre-notification to the grid company, to a finished and inspected installation in your home.
Need to upgrade to three-phase?
Contact us and we will help you assess the conditions in your specific home.
FAQs about Three-Phase Power
Here we answer the most common questions about switching from single-phase to three-phase.
Further reading & related services
Article
Installing Three-Phase in a House: Cost, process and when you need it
Complete guide with cost table, ROT deduction and how the grid company process works.
Read articleArticle
EV Charger with Load Balancing: Complete guide 2026
Why load balancing is essential — product comparison and pricing examples.
Read articleArticle
Preparing your home for an EV: Complete checklist
Checklist of what you must verify about your home's electricity before the car arrives.
Read articleService
EV Charger Installation
Zaptec, Easee & Garo — we install the EV charger alongside your three-phase upgrade.
View serviceService
Fuse Box Upgrade
Combine your three-phase upgrade with a new modern panel and MCBs in one visit.
View service