Famous How Many Christmas Light Strings Can You Put Together Ideas. Web it is possible to connect 8 to 10 times more light strings together end to end and only use one plug outlet. Ul listed lights state a maximum of 210 watts can be connected when using 22 gauge wire, and a maximum of 420 watts can be connected when using 20 gauge wiring.
Each outlet cannot supply 15 amps of christmas lights. Web (100 watts/run)/ (10 watts/string)=10 strings/run so, you can safely connect no more than 10 of these string lights together. Web you can put up to 30 lights (based on 50 watt light) on a 15 amp breaker.
