Originally Posted by AdultPornMasta

Uh,no; the transformer drums are hermetically sealed. The problem comes from high humidity and/or short circuits created by all that water which will blow the explosive fuses located at the transformer site, which explosions are often misinterpreted as "transformer fires".

A dead short on the output of a power transformer will not last long but can heat up the wiring long enough to set the wiring insulation on fire. If there is vegetation or a tree nearby, either may ignite if conditions are right though.

This from my Buddy who works for the Board of Public Utilities in Kansas City.