|Equipotential Bonding Box|
The proper name for bonding a pool is Equipotential Bonding. The concept is pretty simple: you want the pool water and everything in and around the pool to be at the same potential, or voltage. If there is a difference of less than 4 volts, you will feel a tingle. If the difference is more than 4 volts, you can feel a greater shock. Proper bonding of the equipment ensures the same potential (voltage) anywhere in the pool area. Bonding is achieved by connecting anything metal in and around the pool together with a #8 wire which then leads back to a common ground. The National Electric Code requires any fixed equipment made of metal that is within 5 feet of the pool to be bonded.