Power cables comprise a number of conducting cores of copper or aluminum, insulation and, for some situations which require mechanical protection, armoring. Insulation is usually XLPE (cross linked polyethylene), LSF (low smoke and fume—for occupied buildings) or EPR (ethylene-propylene). Armoring is usually steel wire which itself is then sheathed to prevent corrosion. Cables serving the motors of large pumps or other large plant have a large cross-sectional diameter and require a large bend radius to be considered for the installation. This affects the space needed in cable trenches under panels and at other changes in direction such as draw-pits.
The most common use of CCTV is in security camera systems. They’ve been found for years in areas like large retail shops, banks, and government institutions. Thanks to reduced costs in the manufacture of cameras and video recording equipment, camera systems are becoming more and more commonplace in smaller businesses, and even private homes.
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