Electrical Cable Insulation Types

Multiconductor construction should be used unless limited by physical factors.

Electrical cable insulation types.

W rated for wet locations. Thermoset or thermoplastic dry use only. The types of cables and wires that are used for communication or signal transmission purposes are. Rough service wire but not as nice looking as po.

Twice as thick in insulation but similar to po with silk or rayon top layer. Shielded or screened cable. H heat resistant. Hh high heat resistance up to 194 degrees fahrenheit.

Thermo plastics such as polyvinyl chloride pvc and crosslinked poly ethylene s xlpe. 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. 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. Portable or extension cord.

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. For example black and red wires typically are used for current carrying or hot connections and white wires usually are grounded neutral conductors. First of all cable insulation. The exterior insulation on cloth or fabric insulated nmc electrical wires are often black silver or white but may also be black or brown.

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. Green insulated wires and bare copper wires are used for grounding wires. 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. Composite insulators are less costly lighter in weight and have excellent hydrophobic capability.

X synthetic polymer flame resistant. Types of cables and wires communications cable. Understanding the basic markings helps you choose the right type of wire or cable for your project. Similarly nonmetallic nm cable which contains multiple wires has markings on the outer sheathing of the cable.

Two or more stranded wires with flexible insulation for temporary use. Submarine cable generally consists of a lead sheathed cable and is usually armored. T thermoplastic insulation. It is a flexible electrical cable with connectors on both ends to provide a temporary ac.