https://asia.nikkei.com/Business/Automobiles/Japan-to-relax-rules-on-fast-EV-chargers-jump-starting-rollout Japan to relax rules on fast EV chargers, jump-starting rollout 2023/01/04 ... There are currently no special rules for charging stations with output of 20 kW or below. Stations that go above 20 kW are required to meet certain safety measures, including those concerning insulation. Charging stations with an output above 50 kW are subject to additional restrictions, such as mandated distances from buildings. Stations with an output over 200 kW are treated as electrical substations that transform high-voltage currents. This means 200-kW charging stations installed indoors need to be placed in areas separated by ceilings and walls made of noncombustible material. Depending on the equipment, only certain people are allowed to operate such chargers ...