Abergavenny and Cwmbran (Y Fenni a Chwmbrân)

Contents

• Overview
  • General data
• Lines
• Tower forms
  • Examples
  • Tower views
    • D3
    • D20
    • D60
    • DT
• Tower details

Overview

Three 66 kV power lines have been discovered in south Wales that use a tower type similar to J L Eve C333: two in Cwmbran and one in Abergavenny (Y Fenni). Compared to C333, the top crossarms have been extended in length. The line tower top crossarms are longer than the middle crossarms by around the same amount that the middle crossarms are longer than the bottom crossarms (around 1′–4″). The angle towers appear to have had the top crossarms extended to the same width as the middle crossarms, and vertical bracing has been added to some of the crossarms.

All the photographs on this page were taken in Abergavenny on Saturday 14th June 2025 during pylon hunt 41.

General data

Design contractor	J L Eve
Found
Height (straight line tower)	?
Voltage	66 kV
Dates back to	?
Known conductors	Single
Design conductor	?
Circuit count	Double

Lines

Known lines include:

• Two short lines heading west from Llantarnam substation, Cwmbran (51.629° N 3.017° W)
• A line heading west from Abergavenny substation (51.839° N 3.014° W)

Tower forms

The following diagrams are shown to scale at 12 pixels per metre, on the assumption that the tower body is identical in size to C333:

The D3, D20 and D60 diagrams are directly adapted from those of C333. The DT diagram is based on the D60 tower body.

Examples

Tower views

D3

D20

D60

DT

Tower details

No material obtained.