Wire Insulation Types

Types of material used for wire insulation kris tech wire types of material used for wire insulation the insulating materials commonly used to cover copper wire and other electrical conductors fall into two broad classes.

Wire insulation types.

The individual conductors are generally bundled together in a sheathed cable such as the familiar nm cable or a plastic or metal conduit such as emt. Fep and ptfe dupont tm teflon excellent high temperature properties. This is presented in table 29 1. The coding system relates to the performance characteristics of the wire insulation.

Appropriate uses for various wire types are given in article 310 10 of the nec 2017 edition. The safety and effectiveness of the wire depend on its insulation. If a wire is excessively heated its insulation may be damaged. Fep is preferred for jacket material.

Following is a list of insulation materials with information on the typical uses advantages and disadvantages for each option. If the temperature of the surrounding atmosphere becomes more than the maximum limit shown in the table the insulation may be damaged. Based on the 2005 national electric code thermoplastic insulation is the most common plastic insulation. Mullin in the book electrical wiring residential.

Thin wire thick wire flexible stranded or solid. Most flexible of all insulations. The maximum temperature range. The most common types of thermoplastic insulation are thw thhw tw thwn and thhn.

Applications are suited for interiors in spaces beneath raised floors of above dropped ceilings or raised floors primarily areas with air circulation. Wire insulation selection guidelines insulation types. A wire of particular type of insulation may be used in places where the ambient temperature does not exceed a certain limit. Types of insulation available for thermocouple wire and their respective temperature range abrasion resistance flexibility and water submission.

Polyvinyl chloride pvc a pvc jacket is a relatively inexpensive and easy to use material with the potential to be used in diverse applications. If the wiring of an electric circuit. Labels on individual wires individually insulated wires typically are used for installation inside of conduit or flexible metal cable. The most common types of wire used in residential construction are thhn and thwn.

Cookies on the omega websites we use cookies on this website these cookies are essential for the website to work correctly. Plenum polyvinyl chloride plenum pvc is another type of pvc wire insulation material. Good weatherability resists moisture absorption and atomic oxygen. But it is the insulation used on the individual wire conductors inside the cable or conduit that defines if it is suitable for use in wet or damp.