Allied Encyclopedia: Nuclear SIS Cable

Allied EncyclopediaNuclear power plants – somewhere you want a cable failing? We didn’t think so! When it comes to critical applications such as those in nuclear power plants, a high-quality cable that can withstand its demanding environment is a necessity. There is little room for error, so strict standards, like the IEEE 323-1974 and 383-1974 Class 1E nuclear cable ratings, keep safety and efficiency the main priorities.

Nuclear rated SIS cable can be used for a multitude of applications. At its roots, standard SIS cable, otherwise known as switchboard cable, is simple but extremely versatile. It is used in switchboard wiring, distribution and panel boards, control panels, and many other applications up to 600 volts.

SIS Wire

SIS Wire

When circuit shutdown is critical in nuclear power plant applications, the Class 1E safety rating is required, in accordance with IEEE 323-1974 and IEEE 383-1974 standards. This signifies that the cable can shutdown automatically if a failure in the circuit is detected, stopping operations of the equipment without releasing any harmful radioactive material into the environment.

Nuclear power plants can also house Non-Safety Rated Application cable. Non-safety related applications still requires nuclear-rated wire, but because they are not part of a critical circuit shutdown application, they do not require Class1E safety rated cable.

Learn more about Class 1E Nuclear SIS Cable and its uses by checking out Allied Wire’s large selection of standard SIS cable and nuclear SIS wire and cable.

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 Phoenix, AZ; Bedford, NH; Pewaukee, WI; Rochester, NY, Tampa, FL; and Mt. Juliet, TN. For more information on Allied, visit our main website at

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