To protect the public against faults that might allow the cable to become electrified, utility guy cables usually either have a ceramic strain insulator ("Johnny ball"), or a fiberglass guy strain insulator inserted near the top, to ensure that any dangerous voltages do not reach the lower end of the wire accessible to the public. Guys are particularly needed on dead-end ( anchor) poles, where a long straight section of wire line ends, or angles off in another direction. Utility poles are buried in the ground and have sufficient strength to stand on their own guys are needed on some poles only to support unbalanced lateral loads due to the utility wires attached to them, or to resist ground movement. The picture shows a wire crossing the street compared to the main line running the length of the street. You need to research purpose of guide wires…Īs long as there is a wiring going a different direction from standard there needs to be a guide wire to oppose the force from that direction.
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