Match the cable to the charger socket and the inlet on your car. Then check the current, phase capacity and distance you must reach. A larger rating is safe when correctly specified, but it cannot make the car or charging point deliver more power.
Is Type 2 the correct cable for your car?
Look at both ends of the connection. An untethered public or home AC charging point may have a Type 2 socket. A current European-market car commonly has a Type 2 inlet for AC, but an older or imported car may have Type 1.
If both ends are Type 2, choose a Type 2-to-Type 2 Mode 3 cable. Mode 3 is controlled AC charging from dedicated EV supply equipment under IEC 61851-1. If the station is Type 2 and the car is Type 1, the complete cable must have those two different ends.
IEC 62196-2 defines standardized AC connector configurations. EU infrastructure rules use Type 2 as the interoperability interface for relevant public AC charging points. The standard describes the interface. EU law sets the infrastructure scope, while your car manual confirms the inlet and its limits.
How do 16 A, 32 A and phases change power?
Current and phase count set the cable’s power capacity. On a nominal 230/400 V supply, the common combinations work out as follows. The figures are input power before charging losses.
| Cable capacity | Approximate AC capacity | Calculation |
|---|---|---|
| 16 A, single-phase | 3.7 kW | 230 V × 16 A |
| 32 A, single-phase | 7.4 kW | 230 V × 32 A |
| 16 A, three-phase | 11 kW | 3 × 230 V × 16 A |
| 32 A, three-phase | 22 kW | 3 × 230 V × 32 A |
These are cable capacities, not promises of charging speed. A 22 kW cable connected to a car with an 11 kW onboard charger still gives at most the car’s limit. A station may also offer less because of its hardware, site load control or shared power.
The control system identifies the cable’s current capacity and limits the session accordingly. This is part of the proximity function covered by IEC 61851-1. Never alter coding or connector parts to claim a higher rating.
Should you choose 16 A or 32 A?
Choose from a real use case. Check the car’s maximum AC current and whether it uses one or three phases. Then check the home wallbox and the public AC posts you expect to use.
If the car’s AC limit is 16 A on three phases, a 16 A three-phase cable supports its full limit of about 11 kW. A 32 A three-phase cable will not shorten that session. The larger cable may still be useful for a future car, but it may be heavier and less flexible.
A single-phase car can need 32 A to approach 7.4 kW. Yet the local installation or network rules may restrict a large single-phase load. The cable alone cannot solve that limit.
Use this decision order:
- Find the car’s AC phase count and maximum current in its manual.
- Find the charging point’s socket type and maximum available current.
- Choose a cable with sufficient current and phase capability for the power both can use.
- Decide whether extra rating has a realistic future value to you.
Is a three-phase cable always the better buy?
Not always. A three-phase Type 2 cable can support a single-phase session when the complete equipment is compatible. This can make it a flexible choice if you may later use a three-phase car.
The trade-off is handling. More conductors and a higher current rating can mean more weight and stiffness. Exact size and mass depend on the cable design, so compare the manufacturer’s specifications rather than assuming every 32 A cable feels the same.
If your current and expected cars are single-phase, paying for unused conductors may bring no charging benefit. If your car’s limit is 16 A on three phases, a 16 A three-phase cable is correctly matched. Buy for the connection you have, not the largest number on the listing.
How long should the cable be?
Measure with the car parked in its usual position. Include the route from the charging point to the inlet without stretching across bodywork or creating a tight bend. Repeat the check with the car facing the other way if that can happen.
Choose enough spare reach for normal positioning, but avoid a large loose loop in a walkway. A longer cable costs more, takes more storage space and is harder to keep off the ground. The right length is the shortest complete cable that reaches comfortably in your real parking layouts.
Do not solve a short cable by joining two charging cables. IEC 61851 includes requirements for the charging connection and cable protection. Use one complete, correctly rated assembly and follow the product instructions.
Measure the awkward case
Measure to the farthest likely inlet position, not only today’s perfect parking position. Allow a relaxed route around the car. Do not add length for routing through doors, over sharp edges or across traffic lanes.
What construction details matter?
Check the manufacturer’s declared electrical rating and conformity information first. The cable should clearly identify its current, voltage and phase capability. The connector and cable assembly should be intended for EV conductive charging. Check its documentation against the applicable IEC 62196 and IEC 61851 requirements.
Then judge the physical design. Look for strain relief at both connectors, readable markings and caps or storage features that protect the contacts when not in use. If the cable will live outdoors, check its stated environmental limits rather than relying on appearance.
A brightly coloured jacket can be easier to see on the ground, but colour is not a safety certification. A bag keeps a dirty cable away from luggage, but the cable should be clean and dry before storage. Do not wrap damaged insulation with tape and continue using it.
Tethered or untethered: do you need a cable at all?
A tethered wallbox already has a vehicle cable attached. It is quick to use at home, but you may still need a separate cable for untethered public AC posts. DC public chargers provide their own cable.
An untethered home wallbox lets you remove the cable. That may keep a shared parking area tidier, but every session includes getting the cable out and putting it away. Think about daily handling, not only the wallbox photo.
What should you avoid?
Avoid unknown electrical ratings, damaged contacts and claims that a cable “upgrades” the car’s charger. Do not buy only by a kW headline because the same number can hide different phase and current arrangements. Check current and phases explicitly.
Do not use a household extension lead, improvised coupler or chained charging cable. Do not drive over the cable or shut it in a door. Replace a damaged assembly through the manufacturer or a qualified service route.
The best Type 2 cable is not the highest-rated one. It is the correctly rated cable you can handle, store and connect without strain every time.
Frequently asked questions
Should I buy a 16 A or 32 A Type 2 cable?
Choose 32 A only when the car and charging points can use more than 16 A per relevant phase, or when you have a clear future need. A 16 A three-phase cable supports about 11 kW on a nominal 230/400 V supply.
Can a three-phase Type 2 cable charge a single-phase car?
A correctly specified Type 2 three-phase cable can carry a single-phase session, but the car and station still control the usable power. Confirm compatibility in the vehicle and cable documentation.
Will a 22 kW cable make my car charge at 22 kW?
No. The station, cable and car each set a limit. The lowest available limit wins, and the car's onboard charger caps AC charging.
Can I extend a Type 2 charging cable?
Do not plan to join charging cables or use a generic extension. Choose one complete cable that reaches. Follow the car, charger and cable manufacturer's instructions.
