The blaze happened between 5.15pm and 5.40pm on Monday 28 July on Heol y Gors, forcing the closure of the road between Cwmbwrla roundabout and Gors Avenue. The outage left multiple sets of lights on the A483 Carmarthen Road – a key route into the city from the west – out of action during the evening rush hour.
At the time, police warned of significant disruption, with thick smoke in the area and National Grid engineers called in to make the site safe.
Appeal for dashcam footage
Officers have released a CCTV still of a man they want to identify. The image is blurred, but shows a young male wearing a fluorescent yellow T‑shirt.
They are asking anyone who was in the area at the time and who may have dashcam footage featuring the individual to get in touch.
Information can be given to South Wales Police via:
- Live Chat at south-wales.police.uk
- Online form at bit.ly/SWPProvideInfo
- Phone: 101, quoting reference 2500241253
Details can also be passed anonymously to Crimestoppers on 0800 555 111 or via the Crimestoppers website.
