Bung some clutch and brake cleaner. It was free up and un gum the rings.grumpy now....
Its where the overhead cable runs through the trees, the trees need a good chop but its a struggle to get any tree guys around here as they are always busy in the allowed cutting period, I could do with throwing bob up there with a chain sawThat looks like someone has driven a high load under the wires and caught up on them . Do you often get high loads such as combined harvesters /sileage stuff trucks loaded with bales etc. passing under the cable / if so you might try asking for the poles to be replaces with high load route poles .
BT used to do quite a bit of trimming back where branches interfered with multicore over head cables.Its where the overhead cable runs through the trees, the trees need a good chop but its a struggle to get any tree guys around here as they are always busy in the allowed cutting period, I could do with throwing bob up there with a chain saw
no pics yet as i will have to dig it out first