EV charging cables: which one you actually need
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Charging cables are one of the few EV purchases where the specification genuinely matters and where the cheapest option is a poor idea.
What you probably need
For most drivers in the UK and Europe: a Type 2 to Type 2 cable, 32A single-phase, 5 metres.
That covers untethered home chargers, public AC posts and destination chargers. It is the default for a reason.
The specification, decoded
Connector type. Type 2 both ends in the UK and Europe. In the US, J1772 on older cars — though for AC charging in the US the cable is usually attached to the unit.
Current rating: 16A or 32A. This is the maximum the cable can safely carry. A 32A cable is more capable and only slightly more expensive. Buy 32A.
Phases: single or three. UK domestic supply is single-phase, capping AC charging at about 7.4 kW. Three-phase cables work fine on single-phase supplies — they are just heavier and dearer. Only worth it if you regularly use three-phase public posts and your car accepts more than 7.4 kW AC.
Length: 5m or 7.5m. Five metres suits most situations. Go to 7.5m if your parking position varies, if the charge port is on the awkward side, or if you are unsure — a cable that does not reach is useless, and one that is slightly long is merely mildly annoying.
The cable never sets the speed
A common misunderstanding. Charging speed is set by the lowest of three limits: the charge point's output, the car's onboard AC charger, and the cable's rating.
A 32A cable on a 16A post charges at 16A. A 32A cable on a car that accepts 7.4 kW charges at 7.4 kW. Buying a higher-rated cable does not make anything faster — it just ensures the cable is never the bottleneck.
What to avoid
Unbranded cables with no visible certification. This carries mains current at up to 32A, in the rain, handled by hand. Look for proper standards marking and buy from a seller who will stand behind it.
"Fast charging" adapters that claim DC from an AC source. Not possible. DC rapid charging requires the charger to do the conversion; no passive cable does it.
Coiled cables, generally. Neat in principle, but they can generate heat and are often less pleasant to handle than a straight cable with a decent bag.
Storage
A cable bag is worth the small cost. A wet, dirty cable loose in the boot is unpleasant and shortens its life. Many cars include a bag; many do not.
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In pictures
Common questions
Will a 32A cable charge my car faster than a 16A one?
Only if the car and the charge point both support the higher current. A 32A cable on a 16A supply charges at 16A. The cable never sets the speed — it just must not be the limiting factor.
Do I need a three-phase cable?
At home in the UK, almost certainly not — domestic supply is single-phase. A three-phase cable works fine on single-phase supplies, so it is harmless, just more expensive and heavier.
About the author
ElectraMile EditorialEditorial desk
The ElectraMile editorial team covers charging, running costs and EV ownership for readers in the UK and US.
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Figures shown for United Kingdom in GBP. Switch market in the header to see local pricing and terminology.
