How many cores are there in the cable?
A few cores of the cable line are divided into several cores according to the number of wires and the number of the wires wrapped inside the cable rubber. A thread is a core, and two cores and three cores are common. Four core, six core, etc., the specific purpose is:1, two core, is to control an electric appliance, one is FireWire, and the other is a zero line, switch in the middle of the FireWire series, turn on or off the power supply;2, three core, generally used for 380V power line, one of which is the zero line, the other two are used between the electric appliance and a power line by the three gate switch or a magnetic starter control for three-phase motor or electric welding machine;3, four core, usually used for incoming wire power line, a zero line, the other three are respectively connected with the transformer root A, B, C, B, C line, A line, the end of all electric power equal power output transformer so smooth;4, six core, commonly used in a little space where there are many electrical appliances, so that he can control the five electric appliance, multiple switch are respectively connected in series with the five FireWire, five common appliances a zero line, for example: a workshop crane power supply circuit, a circuit and control of crane longitudinal walking with transverse circuit, there is a rising and falling circuit circuit, a circuit with a siren, personal operation, a control switch, you must use this cable, here I would like to point out, each core color is not the same, the purpose of which is to facilitate the connection.
Type of cable - Specifications for wire and cable - shielded cable type - control cable type - communication cable type - mine communication cable type - armoured cable specification type1) category: H - local communication cableHP - distribution cableHJ - Office cable(2) insulation: Y - solid polyolefin insulationYF - Foam polyolefin insulationYP - Foam / solid skin polyolefin insulation(3) undersheath: A - coated aluminium shielded PE sheathS - aluminium, steel, double metal tape shielding, PE sheathV - PVC sheath(4) features: T - Petroleum paste fillingG - high frequency isolationC - self-supporting(5) outer sheath: 23 double strip loaded polyethylene anticorrosive coating underwriting33 - single layer fine steel wire armored polyethylene quilt43 single layer steel wire armoured polyethylene quilt53 - single strip longitudinal wrinkles armoured PE coating553 - double tape longitudinal wrinkles armoured PE coating
The core number of a cable or sheath line refers to the number of individual wires in it.For example, two is a single core fire 10 use, three core is coupled with a ground wire. Dozens of cores, usually communications cables, consist of dozens of wires insulated from each other.
