A mode 2 cable is the cord with the chunky box that connects the car to a household socket. On an ordinary Belgian socket it delivers 1.8 kW (8 A) or 2.3 kW (10 A) depending on its setting, which adds 100 km in 8 to 10 hours. It watches the car, not the wall.
What exactly is a mode 2 cable?
One cord, one box, two ends. On one side a plug for a wall socket, on the other the car's Type 2 connector.
The mode 2 cable carries a control box built into the cable, known as an ICCB (in-cable control box). It checks the earth connection, cuts out on overcurrent and talks to the car to set the current, according to Tesla-mag's description (published 26 November 2025, updated 19 September 2026). Depending on the manufacturer and the trim, the cable is supplied, offered as an option or missing from the boot.
Not to be confused with the mode 3 cable, which runs from a charge point to the car and contains nothing. Our Type 2 cable guide covers that one.
Four sources, three figures for the same cable
I put four pages side by side, and they do not say the same thing.
| Source | Date | Ordinary socket | Reinforced socket |
|---|---|---|---|
| Energuide.be | updated 06/10/2025 | 10 A or 16 A (limit of household sockets) | not detailed |
| Tesla-mag | updated 19/09/2026 | 8 A, about 1.8 kW | 14 or 16 A, about 3.2 to 3.7 kW |
| Bobex.be | undated | 8 A, 1.8 kW | about 3.2 kW |
| Dacia (UK FAQ) | read on 04/11/2026 | 10 A, 2.3 kW | 16 A, 3.7 kW |
These gaps are not mistakes. Eight amps is the cautious setting on many boxes, ten amps the one others offer, and sixteen amps the limit of the socket itself. Each page describes one link of the chain.
None of these pages measures a specific cable, and I have not measured yours. The figure that counts is the one displayed or engraved on your own box, and the manufacturer's manual has the last word.
The box protects the car, not the wall socket
The objection comes quickly: since the box monitors everything, the socket is safe. That is wrong, or rather half right.
The box measures the current flowing through the cable. It sees neither the tightness of the terminals behind the socket, nor the gauge of the wires in the wall, nor fifteen years of oxidation on a garage socket nobody ever replaced. Tesla-mag asks for a circuit that is "recent and in perfect condition", rules out extension leads and power strips as "absolutely to be avoided", and recommends a dedicated line protected by a residual current device. Bobex goes further and says charging from a standard socket "can prove dangerous".
Energuide sets the threshold at 2,600 W: beyond it, a dedicated circuit is required. That threshold falls right between the two usual settings. At 10 A, or 2.3 kW, you stay below it. At 14 A, or 3.2 kW, you go above it, and the reinforced socket becomes the answer (our reinforced socket guide prices that job).
The opposite argument holds too. At 8 A, a cable draws 1.8 kW, far below what a socket rated 10 or 16 A by Energuide can carry, and the box is there precisely to cut out on overcurrent. The real risk is not the current: it is the old socket.
My view, plainly: for a weekend emergency top-up on a healthy socket, 8 or 10 A is enough, and I would not worry about it. For nightly charging, mode 2 on an ordinary socket is not a way of life, it is a tolerated stopgap. The RGIE, the Belgian electrical installation regulations, whose Book 1 has applied since 1 April 2026, also requires, at the connection point of a charger, a 30 mA residual current device that still works with a DC component of at least 6 mA.
How long for 100 km at each current setting?
I redid the calculation on a single basis: 16.5 kWh/100 km on the road, plus about 10% AC losses, so 18.15 kWh drawn at the meter for 100 km. Real losses vary with the current; mine is uniform.
| Setting | Power at 230 V | 100 km added | Kilometres in an 8 h night |
|---|---|---|---|
| 8 A | 1.84 kW | 9 h 52 | 81 km |
| 10 A | 2.30 kW | 7 h 53 | 101 km |
| 14 A | 3.22 kW | 5 h 38 | 142 km |
| 16 A | 3.68 kW | 4 h 56 | 162 km |
For a daily 40 km trip you need 7.3 kWh: 3 h 57 at 8 A, 3 h 09 at 10 A. A night is plenty. It is the 300 km top-up, 54.5 kWh, that breaks mode 2: 23 h 40 at 10 A, nearly 30 hours at 8 A.
The bill does not move from one row to the next. With the fourth-quarter 2026 CREG price caps (the federal energy regulator) taken from our article on the portable charger, 100 km costs €5.85 in Flanders (32.25 c€/kWh), €6.69 in Brussels (36.88) and €6.86 in Wallonia (37.79). The current setting buys time, never cheaper kilowatt-hours.
A field reference: a Dacia Spring takes about seven hours to go from 20 to 80% on a 2.3 kW socket, according to Tesla-mag (page updated 1 June 2026). Dacia confirms the 2.3 kW on a standard socket.
Is mode 2 still allowed in Brussels?
For new buildings, no. The text comes from the Brussels regulator.
On 8 October 2024, Brugel approved without public consultation the revision of the electric vehicle connection requirements submitted by Sibelga on 3 October. Decision no. 288 reproduces point 4.1.2 b): from 1 January 2025, the installation and use of mode 2 charge points is excluded in new buildings and after major renovation, a term defined by reference to European Directive 2024/1275. Only mode 3 is accepted there. Energuide summarises the same rule on its page of 6 October 2025.
As I read it, the text speaks of charge points, meaning installations. The cable you take out of the boot for an emergency top-up in an existing building is not targeted, but I found no official comment saying so in black and white. In a Brussels condominium, ask Sibelga and read your building rules.
In Wallonia and Flanders, I found no equivalent ban. That is no guarantee: a municipal or condominium regulation can go further.
Five checks before plugging in, no screwdriver needed
- Read the current setting on the box and compare it with the manual before plugging in.
- Avoid any extension lead and any power strip, even a short one.
- Unroll the cable fully without twisting it or bending it tightly, and store it in a bag or box, as Allianz recommends (page of 27 March 2025).
- Touch the socket after half an hour of charging: if it is clearly hot or smells of plastic, unplug and call an electrician.
- Give up on an old, cracked or blackened socket, however tempting the saving.
Any work on the installation is a job for a certified electrician, reinforced socket included.
Do you need a second cable?
No, unless yours is missing or tops out too low. For 11 kW and industrial plugs, see the portable charger. For a fixed charge point on the Brussels grid, the 3×230 V without neutral file is worth the detour.
Frequently asked questions
Can a mode 2 cable stay plugged in all night?
In principle yes, that is its intended use, as long as the cable is intact and the socket is in good condition. An ordinary socket copes badly with a steady current for eight hours if it is old. Once power reaches 2,600 W, Energuide calls for a dedicated circuit installed by a professional.
Can I set a mode 2 cable to 16 A on an ordinary socket?
Some boxes go up to 10 A or 13 A, but Tesla-mag advises against it without checking the installation. At 16 A, or 3.7 kW, you are no longer in ordinary-socket territory: you need a dedicated line, and a certified electrician decides on site.
What is the difference between a mode 2 and a mode 3 cable?
Mode 2 plugs into a wall socket and carries a control box midway along the cable. Mode 3 links the car to a charge point or wallbox that already holds all the intelligence, with no box. The first is for emergencies, the second for daily use.
How long does a Dacia Spring take to charge on a mode 2 cable?
About seven hours from 20 to 80% on a household socket at 2.3 kW, according to Tesla-mag (page updated on 1 June 2026). Dacia itself quotes 2.3 kW (10 A) on a standard socket and 3.7 kW (16 A) on a reinforced one.
Is the mode 2 cable banned in Brussels?
Not the cable you keep in the boot, as I read it. The rule approved by Brugel on 8 October 2024 targets the installation and use of mode 2 charge points in new buildings and after major renovation, from 1 January 2025. For an existing building, ask Sibelga or your building manager.
Le verdict de Christophe F.
On an ordinary socket in good condition, stay at 8 or 10 A: 1.8 to 2.3 kW, and 100 km added in 8 to 10 hours for €5.85 to €6.86. Once you aim for 14 or 16 A, you need a dedicated line installed and inspected by a certified electrician. In Brussels, no new mode 2 charge points in new builds since 1 January 2025.
