This standard applies to auxiliary circuits, except such forming internal wiring of electrical equipment.
This standard applies only in conjunction with the other parts of IEC 60364 series. This standard does not apply for auxiliary circuits of installations and equipment for which specific standard exist, e.g.: – safety of machinery according to IEC 60204 series; – installation and equipment for control and supervision of public grids; – electrical equipment for furnaces; – auxiliary circuits and control circuits for power installations with supply voltage exceeding 1kV, IEC 61936; – system for fire alarm, intruder alarms and raid alarm; – traffic lights and signalling systems; – luminous call systems; installations in hospitals, nursing homes and similar institutions; erection and operation; – railway and funicular course applications; – erection of electrical installation in open-cast mines, quarries and similar works – Circuits for data transfer (e.g. electronic control and BUS-systems)