Wrapping tape on a high voltage cable can be time consuming and error prone since the careful build-up of tape requires accurate half-lapping and constant tension in order to reduce build-in air voids. Rubber tapes are designed to stretch−some up to 1000%. Elongating the tape this way drives to compression, and that results in the strong self-fusion that provides great insulation and moisture protection.



As mentioned, different colors indicate different types of electrical tape features. Many standard electrical tapes are sold in black, but you can find them in nearly every color. Choose the color of tape based on the application you will be using it for and its voltage, phase, and other electric-relevant information.