Although not standardised, the Cat 5 cable normally uses 1.5 - 2 twists per centimetre. The "J" in the designation qualifies the "S" -- "J" designates "junior service." The cable is made up of 3 solid cores, which are individually insulated and wrapped in an outer PVC sleeving. In a nutshell, fast charging increases the current sent to the battery to fill up its capacity quicker. Multi-conductor cables can have as few as two conductors and as many as 100 or more conductors. Other core colours are allowed except green and yellow. These conductors, or wires, can be twisted in pairs, triads, quads or they can be concentrically laid throughout the cable. Marking inscription for identification of cores of electric cables (number printing). Domestic light fittings that are controlled by two switches (two way lighting) use 3 core and earth for connections between the two switches. A multicore cable is a type of electrical cable that combines multiple signals or power feeds into a single jacketed cable. Primarily designed for installation in public areas, this indoor general wiring cable can be used as a general supply lead and very popular in both lighting and appliances . Cat 5 cable uses twisted pairs to prevent internal crosstalk, XT and also crosstalk to external wires, AXT. 3 Core cables. Cat-5e: This form of cable is recognised by the TIA/EIA and is defined in TIA/EIA-568, being last revised in 2001. Modern Electric Cables: Cable for domestic 230 volts AC electric power circuits is usually available in the UK to BS 6004 (Electric cables). Coaxial cable is constructed from a single copper or copper-coated steel wire as the center core which carries the high frequency signal. Core identification with numbers acc. Current Rating: 10 Amps An "SJO" power cable shares all of the characteristics of an "SO" cable; they are strong cables with a stranded core and able to resist oil-laden environments. In Europe, the terms multicore or multi-core are used more often to describe a multi-conductor cable. A 5.1-channel system will require five separate speaker cables plus a single coaxial cable for the subwoofer (see Coaxial, above); a 7.1-channel system, seven cables plus a single coaxial sub cable. Wire material. Not to be used in areas where the cable may come into contact with grease or oil. to EN 50334. The term is normally only used in relation to a cable that has more cores than commonly encountered. Copper is the most widely used material for speaker cable due to its low cost and low resistance. Application: Control Applications. This wire is surrounded by a dielectric insulator, often made of plastic, which keeps a constant distance between the center conductor and the next layer. 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