Two men sustained severe burns while working on an electrical transformer at a university in Roodepoort on Sunday night, Netcare 911 said.

One man sustained 50% burns and the other 20% burns when a ”flash over” – a burst of very high energy – occurred.

Netcare 911 spokesperson Chris Botha said the men had to be stabilised on the scene before one of them was taken to hospital by helicopter, and the other by ambulance.

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