In article ,
mentioned...


nobody wrote:

In wrote:

But in 1978 I wired the 2 bulbs in the each of the EXIT
lights in the church in series.

Congratulations, you probably bypassed a safety feature. If they're in
parallel, if one burns out the other keeps going. In series, if one
goes they're both out, and the exit sign is no longer visible.

Thanks for the congratulations! Regarding safety: there are 6 exit
lights, which had to be re-lamped 3 - 4 times per year. So the new
wiring saved 25 (years) x 6 (lights) x 3.5 (relampings per year)
or 525 trips up and down the ladder. It also kept hands and fingers
out of electrically hot fixtures 525 times. Those fixtures are
required to be on 24x7 - the only way to turn them off is at the
breaker. So it saved 525 flips of the breaker - or more likely, it
saved 525 instances of fingers inside a fixture that was electrically
hot, human nature being what it is. The need for re-painting has
also been reduced (more ladder climbing), but I cannot quantify
that. With the old wiring, the wall and ceiling above the exit
signs used to get dirty a lot sooner than it does now.

Now with the above facts in mind, which do you think is safer?

Neither. Nowadays they put the exit signs down low, because the
rising smoke from the fire fills up the rooms and the exit signs can't
be seen. :-(

Hey, I agree with you. But instead, I would have used higher voltage
lamps, two in parallel. Decent LEDs were hard to get back in the
'70s. Another solution might be to use neon lamps.


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