Kris-Tech wire and cable is manufactured in compliance with the applicable requirements of the NEC (National Electrical Code). The insulation properties of SIS are the same as XHHW-2. Although Kris-Tech manufactures SIS in sizes #18 through #4/0 AWG, the smallest UL recognized conductor is #14 AWG. Our standard stock product is gray and we also do colors. All material rated VW-1 for flame retardant properties.
SIS conductors are most often used in switchboards and panel boards as specified in the National Electrical Code. Although SIS is not recognized in the NEC Article 310 for use in conduit, Kris-Tech’s is dual-rated as XHHW-2. Final approval always rests with your local electrical inspector. Please reference NEC Article 310 for use in conduit.
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