Ingineer
Well-known member
As others have correctly confirmed, the official single-phase voltage spec in the US is 120v or 240v, and it's been that way for the better part of a century. Prior to WW2 in some parts of the country we had 110v and 115v, but it's since been nationally standardized at 120/240. (Europe/China/Australia is 220-240v and Japan has dual voltages like us, but lower: 100/200V)DNAinaGoodWay said:Need to clarify this:
Is voltage 220 or 240? I've seen both.
If 240, and drawing at 16A, so charging at 3.84 kW, why do they say the inboard charger is 3.3 kW?
Is it because voltage is 200 in Japan?
Actual Watts = Amps X Volts X PowerFactor. The Leaf's OBC (on-board charger) can pull up to 16A with close to a unity power factor (~.99) when on 240V yielding a draw of 3.84kW. Now after internal conversion losses and powering all the overhead on the Leaf's various systems, only a little over about 3.3kW is delivered to the battery. This is why Nissan calls it a "3.3kW" charging system. In Japan, the national voltage spec is only 200V, so the charger will pull more current (provided the EVSE allows it), but even so, the charging system outputs a bit less to the battery.
-Phil