I was trying to replace two three-way switches last night and while testing for voltage the circuit breaker tripped.
Instead of just flipping it back and letting it trip immediately if it wanted to, I held it for a couple seconds (and it made a buzzing noise.) Could that have damaged it? I haven't noticed anything odd about it since (smell, noise, etc).
Like the woman I knew, the breaker to the furnace
tripped. She reset it a dozen or so times. Until
it stayed on.
First problem, the $50 blower motor shorted out.
But when she power surged it a dozen times, it
vaporized the relays on the $250 circuit board.
On Monday, December 22, 2014 2:09:30 PM UTC-5, philo wrote:
Curious thing, how did that happen, while you were "testing for voltage"?
Could that have damaged it? I haven't noticed anything odd about it since
(smell, noise, etc).
So, apparently you had a momentary dead short while testing for voltage,
that short that should only have then existed while you were testing,
then managed to become permanent and then
you doubled down by allegedly holding the breaker closed? Sure, I believe
that. In my experience, those that create dead shorts while working on a
switch are the first to run for the hills when anything appears to be wrong
It's hard to believe any real person is going to hold a breaker that is
tripping, especially due to a known fault that you just created.
That's how I thought they worked too. Which means this is almost surely
a troll and it never happened.
I've seen bigger degrees of idiocy.
Back in my working days a guy in another department wanted to borrow my
variable DC supply. I saw that he had an inverter on his bench and he
also had a power supply.
He told me that his power supply could not deliver enough current and he
wanted to put the inverter on a larger supply to just plain "burn out"
whichever component was shorted.
I looked at the inverter and there were two power transistors, a
transformer and little else.
I told him that almost for sure he just had a shorted power transistor.
He told me he tested one and it was good.
I then had to tell that idiot that the OTHER transistor must be the
shorted one. Sheesh. That was the problem of course.
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