Although not specified by IEC 60320, and not clear whether any formal written standard exists, the most common wiring appears to connect the squared side to the neutral, and the rounded to the hot line.

IEC 60309 specifies larger couplers used for higher currents, higher voltages, and polyphase systems.Connectors are also classified according to the method of connecting the cord, either as rewirable connectors or non-rewirable connectors.

Other common applications are the power supplies of Xbox 360 game consoles, replacing the C15/C16 coupler employed initially, and large CRT televisions manufactured by RCA in the early 1990s. We have used Leads Direct on various occasions for all sorts of weird and wonderful leads that we use in the telecoms industry. Established in 1932, our range has steadily expanded over the years and we’re now proud to bring you a comprehensive range of computer and AV connection technologies. The 3788064 is a 100m 2-core Twin Figure 8 Speaker Cable with a white PVC printed black line sheath and a bare copper strand one time inner conductor.The most common ones are "IEC connector" for the common C13 and C14, the "figure-8 connector" for C7 and C8, and "cloverleaf connector" or "Mickey Mouse connector" for the C5/C6.