Introduction: A 16A or 32A label tells you how much current a cable is designed to carry, while phase and voltage determine the familiar 3. 5kW, 7kW, 11kW, or 22kW figures.
A Type 2 charging cable specification can look confusing at first. One cable may be described as 16A, another as 32A, and both may appear with more than one power rating. A reader comparing products may reasonably ask why a 32A cable is listed as 7kW in one version and 22kW in another. The answer comes from a simple relationship between current, voltage, and the number of phases in the AC supply. Once that relationship is clear, the numbers on a type 2 to type 2 EV charging cable become much easier to interpret.
The ampere, written as A, is the cable’s current rating. It describes the electrical current the cable is designed to carry under its stated operating conditions. A 16A Type 2 charging cable is designed for up to 16 amps, while a 32A Type 2 charging cable is designed for up to 32 amps. Since current is one part of the power calculation, increasing the rating from 16A to 32A can approximately double the available AC charging power when the voltage and phase arrangement stay the same. This is why a single-phase 16A cable is commonly associated with about 3. 5kW, while a single-phase 32A cable is commonly associated with about 7kW. Using a typical single-phase voltage of approximately 220V, the calculation is straightforward: 220V × 16A = 3,520W, or about 3. 5kW. At 32A, 220V × 32A = 7,040W, or about 7kW. The product models V3-16S and V3-32S follow this familiar single-phase relationship. The current number also helps explain the physical and electrical role of the cable. It is not a charging-speed setting by itself, and it is not the amount of energy stored in the vehicle battery. It is a capacity value for the cable’s electrical path. The cable connects an AC charging unit with a compatible Type 2 vehicle inlet, allowing the charging system to deliver current within the limits set by the equipment and the vehicle. The letter or wording that identifies the phase arrangement matters just as much as the ampere number. In the ShinCharge examples, the “S” versions are listed as single-phase models and the “T” versions as three-phase models. That distinction is the reason a 16A cable can appear with either a 3. 5kW or an 11kW figure. The current rating stayed at 16A, but the supply arrangement changed.
For single-phase AC charging, the basic formula is: Power = Voltage × Current For three-phase AC charging, the common balanced-load formula is: Power = √3 × Voltage × Current The √3 factor, approximately 1. 732, reflects the relationship between the three AC phases. It means that three-phase power is higher than single-phase power at the same voltage and current. This is the key calculation behind the common 11kW and 22kW Type 2 cable labels.
A single-phase 16A Type 2 cable at a typical 220V supply produces a calculated power of about 3. 5kW. At 32A, the same type of calculation produces about 7kW. The ShinCharge V3-16S is listed as 16A, single phase, and 3. 5kW. The V3-32S is listed as 32A, single phase, and 7kW. the listing also gives 250V as the rated voltage for these single-phase models. That figure describes the voltage level for which the cable is rated. It is not a promise that every installation operates at exactly 250V, so real calculations commonly use the local nominal AC voltage instead. The listed 3. 5kW and 7kW figures match the familiar approximate values used for single-phase EV charging.
For a three-phase example, use a typical line-to-line supply of approximately 400V. At 16A: 1. 732 × 400V × 16A = 11,085W That result is approximately 11kW. At 32A: 1. 732 × 400V × 32A = 22,170W That result is approximately 22kW. The ShinCharge V3-16T is listed as a three-phase 16A, 11kW cable, while the V3-32T is listed as a three-phase 32A, 22kW cable. The same 32A current therefore appears as approximately 7kW in a single-phase model and approximately 22kW in a three-phase model. The three-phase models are listed with a 480V rated voltage. As with the 250V figure, this is a cable rating and not a universal description of the actual supply voltage at every charging location. Power labels are normally presented using common AC voltage assumptions so that readers can compare product variants consistently. Fluke’s explanation of single-phase and three-phase power provides the electrical background for this difference. The practical lesson is simple: never interpret 16A or 32A in isolation. Read the current rating together with the phase designation and the voltage basis used for the stated power.
A cable’s rated power describes the electrical load it is designed to carry when the surrounding charging equipment provides the matching conditions. It does not set the vehicle’s charging speed on its own. The actual result depends on the AC supply, the EVSE, the vehicle’s onboard AC charger, battery conditions, and the charging controls used by the system. For example, a 22kW Type 2 cable can provide the connection needed for a 22kW three-phase AC charging setup. The charging station must be capable of supplying that level, the installation must provide the appropriate three-phase conditions, and the vehicle must have an onboard charger that accepts 22kW AC. If the vehicle’s onboard charger accepts only 11kW, the charging session will operate around that lower limit even when a 22kW cable is connected. The same principle applies to a 32A single-phase cable. A V3-32S cable is listed at 7kW, but the vehicle may draw less if its onboard charger has a lower limit or if the EVSE is configured to restrict current. A 16A cable also may deliver less than its headline value when the supply voltage differs from the assumption, when the charging system manages demand, or when the vehicle reduces current during part of the session. Battery state and temperature also affect the charging curve. An EV may accept a higher AC rate when the battery has room for energy, then reduce current as the battery approaches a high state of charge. Charging power can also be managed when several loads share the same site or when an energy-management system limits demand. These changes are normal parts of controlled EV charging. For product researchers, the most useful way to read the rating is to separate three questions. First, what current can the cable carry: 16A or 32A? Second, is the model intended for single-phase or three-phase AC use? Third, what power can the vehicle and charging equipment actually accept? The first two questions describe the cable configuration. The third determines the charging experience. This distinction matters in home charging, commercial parking, public charging, and fleet operations. A home setup may commonly use a single-phase 16A or 32A arrangement, producing roughly 3. 5kW or 7kW. A commercial or fleet location with three-phase AC equipment may use 16A or 32A to reach roughly 11kW or 22kW. The International Energy Agency describes charging infrastructure across residential, public, and other operating environments, where available power levels vary with the location and equipment design. The cable length is a separate choice from the electrical rating. The product range includes common 5M, 7M, and 10M lengths, with custom length options shown as available. A longer cable can make vehicle positioning easier, but it does not turn a 16A model into a 32A model or change a single-phase cable into a three-phase cable. Electrical rating and physical reach should therefore be read as two different parts of the specification.
The easiest way to understand a 16A or 32A Type 2 charging cable is to start with the calculation rather than the headline power number. Current multiplied by voltage explains single-phase power, while the three-phase relationship adds the √3 factor. That is why 32A can correspond to about 7kW in a single-phase cable and about 22kW in a three-phase cable. The final charging speed still depends on the EVSE, supply, vehicle charger, and charging controls. For a clear product comparison, read current, phase, voltage basis, and vehicle capability together.
Q：What does the 16A or 32A rating mean on a Type 2 charging cable?
A：The 16A or 32A rating describes the maximum current the cable is designed to carry under its stated conditions. A 32A cable can carry twice the current of a 16A cable, but its power rating also depends on voltage and whether the cable is used with single-phase or three-phase AC supply.
Q：Why can a 32A Type 2 cable be listed as 7kW and also as 22kW?
A：A 32A single-phase cable calculates to about 7kW at a typical 220V supply, while a 32A three-phase cable calculates to about 22kW at a typical 400V three-phase supply using the √3 factor. The different power figures describe different supply arrangements.
Q：Will a 22kW Type 2 charging cable always charge an EV at 22kW?
A：No. A 22kW cable supports the connection for a suitable 22kW three-phase AC setup, but the actual rate also depends on the charging equipment, available supply, vehicle onboard charger, battery condition, and system controls.
Power Quality Testing Resources & Solutions - Fluke
