This Standard specifies safety, performance and interchangeability requirements for sockets rated 500 V, 125 A, for plug-in devices, for retaining covers, and for blanking plates. This Standard also specifies standard connection arrangements (see Appendix A), and standard arrangements for multiple sockets (see Appendix B). NOTES:1 Where a socket is to be used with a device rated at more than 100 A, the socket should be wired with a minimum of 35 mm copper cable to terminals A and L.2 To facilitate the specification and purchase of sockets and other components, the Standard lists information which should be supplied with enquiry and order (see Appendix C).