Unpack your bulbs and plug them in to test they work before you put them on the tree.
Best way to test christmas tree lights.
You ll get a bright colorful look by adding one strand per foot of tree.
According to real simple there s an easy way to calculate how much string lighting is needed for any size christmas tree.
Light testers search for the point in the string where the voltage changes between a good bulb with current flowing and a problem area with minimal current.
Christmas light testers the most convenient way to test for faulty bulbs in a light string is through the use of a light tester.
You can see how to wire a plug and test cables here 3.
Testing the connections and wiring in fairy lights 1.
Check the fuse and wiring in the plug.
Test the bulbs start at the plug end.
Now before you drape all those lights on your artificial christmas trees you may want to use.
Second test the christmas light bulbs with an inexpensive tester available where holiday lights are sold and online.
The christmas light tester will indicate which bulbs are bad and need to be replaced.
There s a way to test and fix the entire string of miniature lights without testing each bulb individually.