- I've also had an 1800W element go BANG on me during a heat-up. It
was one where the nice shiny (tin?) coating had slowly turned a nice
copper colour over time (due to acidic washes ?). The bang was very
impressive, but caught by the RCD before it could do any damage to
me or the wiring. Upon inspection, there was very little to see of
it - eventually found a small pin-prick hole in it. But big enough
to let the electricity out. Harry's suggestion of electrical
continuity testing would be about the only way to prove it.
But the real question should be - how to address this proactively,
to prevent the elements from getting into this condition. How can
you detect that they are almost worn to the point of failure ?
As always, if you're going to mix electricity & liquids, make sure
you have a Residual Current Device (RCD) in the circuit.
Point to query too - re putting out an alcohol fire - using water or
foam - you'd want to ensure that the electricity was disconnected
before doing so.
- Funny. This subject of "Exploding elements" has turned into
an "EXPLODING POST".
In the not too far distant future, I anticipate that this post will
take on a life of its own, spawning many subgroups that span from why
the sky is blue to the history of the papacy.
(I have a 20 amp GFI on all my electric burners, and I sleep well)