In summary, users should now be able to read the printing on a power cord and understand what each of the coded parts mean. For example, this cord shown here has been registered with UL and CUL – serial #339575.  It is an SVT cord for service, vacuum, thermoplastic, rated for 300 V and uses 3 -18 AWG wires. This cable is rated for a maximum ambient operating temperature of 105°C and it meets UL VW1 vertical flame test requirements.