Energy Circuit Board

This is a puzzle type of casual game
This is a casual circuit game, click the round button, the circuit starts to send electricity, if the circuit lights up the square target, it will create a protective film on the passing line to prevent other current from passing through
Each lit box can only have one circuit lit, passing by other circuits trying to light him again, it will be overloaded short circuit, failure
Electricity safety, everyone's responsibility, let's try