I used to design transformer housing in the UK. Heat was never a consideration of the design of the construction beyond the oil as you mentioned.
The main worry for fire is from arcing. In an 11kV the distance between uninsulated current carrying bars must be 30mm or more. The bar I worked with was 10mm thick and 50mm wide chrome plated copper.
In a domestic setting arcing is a cause. Overloading a single socket is also common, especially in older houses which tend to have fewer outlets per room and rely on fuses rather than Residual Current Device circuit breakers (RCDs).
So, it wouldn't surprise me if there were more fires in a hot summer but, as with all news, choosing what to report, even if it is true, is a form of manipulation.
There's also the Baader-Meinhof effect to contend with. Just like the food processing plant fires - are they more prevalent or are we just noticing them all?
I used to design transformer housing in the UK. Heat was never a consideration of the design of the construction beyond the oil as you mentioned.
The main worry for fire is from arcing. In an 11kV the distance between uninsulated current carrying bars must be 30mm or more. The bar I worked with was 10mm thick and 50mm wide chrome plated copper.
In a domestic setting arcing is a cause. Overloading a single socket is also common, especially in older houses which tend to have fewer outlets per room and rely on fuses rather than Residual Current Device circuit breakers (RCDs).
So, it wouldn't surprise me if there were more fires in a hot summer but, as with all news, choosing what to report, even if it is true, is a form of manipulation.
There's also the Baader-Meinhof effect to contend with. Just like the food processing plant fires - are they more prevalent or are we just noticing them all?