Electrical Cable Insulation Types

Shielded or screened cable.

Electrical cable insulation types.

H heat resistant. These are typically composed of a central rod made of fibre reinforced plastic and an outer weathershed made of silicone rubber or ethylene propylene diene monomer rubber epdm. Hh high heat resistance up to 194 degrees fahrenheit. X synthetic polymer flame resistant.

Twice as thick in insulation but similar to po with silk or rayon top layer. The individual conductors within the cable may be insulated in rubber or fabric covered rubber or they may be insulated by plastic in later wiring products. The exterior insulation on cloth or fabric insulated nmc electrical wires are often black silver or white but may also be black or brown. Understanding the basic markings helps you choose the right type of wire or cable for your project.

Green insulated wires and bare copper wires are used for grounding wires. Insulation on electrical wires is stamped with various codes and numbering that indicates the wire type and performance characteristics of the insulation. Composite insulators are less costly lighter in weight and have excellent hydrophobic capability. Usually a yellow green braided jacket green and yellow cord.

Rough service wire but not as nice looking as po. Portable or extension cord. Raceways nec chapter 9 table 5 electrical wire types chart thhn vs xhhw what is the difference se cable acity according to the 2016 neets module proper sizing of conduits and raceways nec chapter 9 table 5sizing conductors electrical contractorproper sizing of conduits and raceways nec chapter 9 table 4wire and cableproper sizing of conduits read more. It is a flexible electrical cable with connectors on both ends to provide a temporary ac.

Tape insulation such as impregnated paper or varnish paper rubber or rubber like synthetic compounds such as silicone rubber butyl rubber and oil based rubber. Thermo plastics such as polyvinyl chloride pvc and crosslinked poly ethylene s xlpe. The types of cables and wires that are used for communication or signal transmission purposes are. Insulation material should be xlp or epr except when paper insulation is justified because of its high resistance to and freedom from internal discharge or corona.

Types of cables and wires communications cable. Two or more stranded wires with flexible insulation for temporary use. Thermoset or thermoplastic dry use only. Similarly nonmetallic nm cable which contains multiple wires has markings on the outer sheathing of the cable.

First of all cable insulation. N nylon coated to resist damage from oil or gasoline. Multiconductor construction should be used unless limited by physical factors. W rated for wet locations.