Southwire Romex SIMpull NMD90 is manufactured using annealed (soft) copper conductors. Compressed stranding for the stranded conductors., 90°C rated PVC insulation with a nylon jacket for the individual conductors; a PVC jacket surrounds the overall construction, Minimum recommended installation temperature is minus 25°C for two-conductor cables and minus 10°C for three-conductor cables. Should be properly stored above 0°C for 24 hours prior to installation., The maximum allowable conductor temperature is 90°C., Maximum voltage rating for all intended applications is 300V., Consult the most recent Canadian Electrical Code (CEC) or a licensed electrician for further information related to applications.