Be sure that the power distribution box has sufficient power provided to it. Long cable runs can result in a voltage drop, which can be solved by using a heavy gauge wire. A junction box is an important feature of an electrical system as it serves the different connections towards achieving the goal of a proper electrical distribution without leading to short circuits. Be it a wall-mounted junction box, a ceiling light junction box, or an outdoor one, all require. Use a volt meter to measure voltage at the power supply and at the power distribution box. Do not touch live parts, turn off the corresponding power switch to avoid the risk of electric shock. Make sure the power supply is. The tough news is that faulty lights with functional outlets and switches have no one-size-fits-all solution.