Allied Encyclopedia: SIS Cable

Allied Encyclopedia SIS Cable is lead wire commonly used in switchboards, and is often referred to as Switchboard Wire. The construction is simple; just a conductor and insulation.

The conductor is made of soft annealed tinned or bare copper, which can be solid or stranded, and is available in a range of sizes from 14 AWG to 4/0 AWG. SIS wire is insulated with cross-linked polyethylene (XLPE) and comes in a variety of colors for easy identification, but gray is the most common color.

SIS cable can be dual rated as UL 3173, UL 3195, UL 3196, or as XHHW-2, depending on the AWG size. UL3173 is dual rated as SIS in sizes 10 AWG and smaller, UL3195 in only size 8 AWG, and UL3196 in sizes 6 AWG to 2 AWG.

SIS Wire

SIS Wire

The printing on UL 3173/3195/3196 is also dependent on AWG size. Size 14 AWG and larger is printed with “SIS” for switchboard application use, and sizes 16 AWG -18 AWG are printed with “Suitable for Switchboard Use”.

UL 3173/3195/3196 cables have a temperature rating of 125°C. UL Type SIS and XHHW-2 are rated to 90°C and also carry the UL VW-1 rating. Switchboard wire has a voltage rating of 600V for all UL styles.

Though this wire has just a few defining characteristics, it can still be used in many applications besides switchboards, like panelboards, distribution boards, low voltage applications, and interconnection of protective devices where optimum performance is required.

To see more SIS cable specs, visit our switchboard wire page. If you have any questions, contact your sales rep at 800-472-4655.

About awcwire
Allied Wire & Cable is a value-added manufacturer and distributor of electrical wire and cable, tubing, and more. We are a family owned and operated company, serving a wide range of industries, including the military, automotive, aerospace, and telecommunications markets. Allied is headquartered in Collegeville, PA. Additional locations can be found across the US, in Merrimack, NH, Tampa, FL, Pewaukee, WI, and Las Vegas, NV. For more information on Allied, visit our main website at

2 Responses to Allied Encyclopedia: SIS Cable

  1. Do you also have point of view on cost of SIS Cables, like SIS-10 , SIS-12 , SIS -14 AWG-GREY Wire.

    • awcwire says:

      Hi Preetosh,

      You can find standard pricing on our website for each of those sizes of SIS Wire, with and without the VW-1 rating at If you or your company use a lot of this and other wire and cable products, we can have a sales representative work with you one-on-one to meet your needs. Please let us know if there’s anything else we can help you with.

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