How do Christmas lights work? How are they wired so that if one light goes out they all go out? And how does using one of those light guns fix all of them?
In: 1
There are two types of electrical wiring used. Series and parallel.
In a series circuit the electric flows in one path one light after an other. If one light goes out it breaks the circuit and no lights light up.
In parallel there are two paths. One interrupted by each light and one that bypasses the previous light. In this format if one light goes out it doesn’t effect the other lights.
The “light gun” is actually a circuit tester that checks to see if the filament in the light is broken making it easier to find the bad bulb.
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