X-mass Tree

The following wiring diagram is typical for x-mass tree bulbs. It can be used to help determine how many parallel combinations of N bulbs are in each string.

The number of bulbs hooked across 120 volts AC determines the operating voltage for the bulb. This then is the maximum this bulb should operate at. Reducing the voltage to 82% of the original will increase the lifetime by 10 times. Reducing the voltage to 68% of the original will increase the lifetime by 100 times.

# of Bulbs per 120 Volts	Volts per Bulb
20	6.0
35	3.4
50	2.4
100	1.2

Offered by Mike.