A single core cable means it has one wire going through the outer casing.Like a 3 pin plug has 2 or 3 which are (blue)-Neutral,(Brown)-Live and maybe (Green/Yellow)-Earth which would be 2 or 3 core.
dont know mate
To prevent for circulating the magentising current.
Single core has one single piece of metal wire, maybe copper or aluminium, with insulation around it. It is not very good if you want the cable to flex and bend as it is more likely to just bend and stay there in the new position. Multiple-strand cable has lots of thin wires and this makes it more flexible and likely to spring back
11 CABLES 630 mm2 single core
Assuming the single core cable forms part of a three phase circuit (i.e. you are clamping three single core cables) it is best to install the three cables close togther in what is called "trefoil" formation. This harmonises the Eddy currents of each phase.
Single-mode Fiber
2
Core Flex = one conductor per cable Tech cable = 3 conductors per cable
On the contrary, armouring is common on single-core conductors. Frequently, high-voltage underground cables are made up of three, individual, single-core, line conductors. These are most definitely armoured to protect them against penetration by the trench backfill and to protect workers who may accidentally hit them with tools.
Current in the single core cable would induce a magnetic current in the steel cable, though a transformer effect. This would heat the steel armored strands, and the circuit would increase more electrical power from the load supply point. The earthing of the cable glands would complete the circuit and the return current would flow in the earth bonding cable between the two points. This is called Eddy currents generated in the cable by the twist of the steel armored around the central core, current flowing in one direction
4-core 630 mm-sq cable sounds like 4 cores each of 630 mm-sq as used on 400 kV power lines, in which case it carries 4 times the current.
Yes. remember that one core is with reduced size by half.