Filled in some missing line details, and some tower details for lines short enough to select all the towers, since there is no Select All or shift-click (select ends of a range) for points on a line.

Route details from UKPN public material.

Another transition

Can’t tell the tower type, but it has twin sealing end platforms.

Poles corrected to towers, towers corrected to poles; line references added; pole and tower characteristics added; at least one missing pole added

Another wood pole line set as towers; support types set and detailed. Line reference set, and support references set where known.

OK let’s see if this gets us the 0 V side … Just for clarity on the Open Infrastructure Map, and to make the map match reality (double-circuit towers/both sides of the towers populated).

Setting second voltage to 0 on Pentir–Trawsfynydd to see if the Open Infrastructure Map shows two circuits; from that line to Y Ffor is wood pole + K1420, with the wood poles and lattice towers now marked as such.

Turns out, I *did* photograph the identity plate, just on the way back …

Updates from Pylon Hunt 36, Watford, 1st March 2025.

Tower in completely wrong position

One section updated to reflect prior undergrounding, and one tower from the previous edit needed marking as a transition.

Portion of power line removed. New PL16 DT erected (odd, as it is an old design), and PL16 junction tower converted into a reflexive arrangement …

>_<

Missing tower, and missing downleads to pole

Added details for the portion of the line examined in person 21/09/2024, including the two confirmed tower numbers, and the height of the L3 DTV45 (from the corresponding key erection diagram, since that one could be observed down to ground level.

This footpath still exists, but the north end is fenced off such that you would not even know it existed. It is completely overgrown. The land has not been reclaimed: it is either set aside for nature, or there’s been a strategic reason to close it.

Couple of tower numbers taken from yesterday’s photographs, as well as some corrected positions (the map showed deviation on line towers)

Couple of towers I encountered while out walking on Saturday.

Bit of a mare, because the line is listed as disused, yet if you don’t mark it as an actual line, the Open Infrastructure Map won’t show it, and the towers (baby PL16) seem to still exist. Added a load of missing towers, and some detail at Rannoch power s