This International Standard describes the electrical loads that can affect electric and electronic systems and components of road vehicles for a supply voltage of 42 V, which may be used in a single or a multiple voltage electrical system. In addition, it specifies the tests and resulting requirements, test equipment accuracy being agreed upon between the vehicle manufacturer and the supplier. It does not cover electromagnetic compatability (EMC). NOTE Electrical loads are independent from the mounting location. This International Standard also provides design guidance for the interaction of 42 V with other system voltages.