Bill Jeffrey wrote:
Chuck wrote:

Just count the number of bulbs that go out when you remove a bulb
from a working string...
then divide 120 volts (if in North America) by the number of bulbs
in each section,

10 bulbs would be 12 volt bulbs
20 bulbs would be 6 volt bulbs
50 bulbs or so would be 2.5 volt bulbs
These are nominal voltages, Some strings use a few more bulbs and
run not as bright.

Now that was a good common-sense troubleshooting response. Right to
the point. Excellent!

Good answer, but that wasn't his question. If I read the OP correctly,
he has a bulb in his hand (not in a string) and doesn't know which
string it goes into. In other words, he doesn't know how many volts it
takes to light this particular bulb.

Bill

This is NOT brain surgery.
Take the unknown bulb. Remove a bulb from one of the target strings.
Hook them in series accross a voltage source. Turn up the volts
till they light at normal brightness. If they're the same brightness,
you've found a match.
If you want to use the multimeter, measure the voltage across each bulb.
If equal, they match. If not, try a bulb from another target string...
mike

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