Have the typical electric kitchen Range; Whirlpool model of a few years
- Is 220 V (or 110 ?) applied directly to the top elements
via the rheostat ?
- With the Rheostat turned on Full, Max. Hot, is a full 220 V being
applied across the heating element ?
- There is no transformer used. True ?
True but they're not rheostats, either, they're generally just a
calibrated bi-metal strip-controlled set of contacts to provide a
time-modulated on-off cycle; longer on, higher temp.
I don't know if any of the newer ones have gone to solid-state controls
Tere's a good diagram of the guts of one here...
Hadn't looked at the forensics; had just found the pictures/diagram of
the control switch some time in the past during another discussion so
this recalled the site and a quick search found the link...
OK, so on looking--AFAICT he doesn't actually fully commit to the root
cause but does indicate the one stove burner was found in "ON" position
which would likely indicate it was forgotten and left on. I'd guess the
coffeepot is incidental collateral damage. Given the final statement is
that the right front burner was on that while not stated explicitly that
is the conclusion to be drawn.
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