Photo credits
Some photography on this site is licensed from the photographers credited below via Wikimedia Commons.
"500kVA, 27.6 kV600Y347V Radial Feed Padmount Transformer" by MalexCV, licensed CC BY 4.0. Two crops; manufacturer plate blurred.
"Pad mount substation in Baltimore County, MD with cooling oil fins on side visible" by Middle river exports, licensed CC0 1.0. Cropped.
"Pont-l'Abbé high-voltage substation 14 - Transformer connections" by PtiBzh, licensed CC0 1.0. Two crops of the same photograph.
"Substation Power Transformer 1" by Yoshieslunchbox, licensed CC BY-SA 4.0. Radiator-bank crop.
"Gießharztransformator 400 kVA" by Rotkaeppchen68, licensed CC BY-SA 3.0. Cropped.
"4.16kV switchgear" by Rsparks3, licensed CC0 1.0.
"Siemens WL II 2500N air circuit breaker" by ToT89, licensed CC BY-SA 4.0.