The code requires that all metal within 5 feet of the water's edge be bonded together unless separated by a permanent barrier. Examples of items that are required to be bonded are: pool equipment motors, metallic pool equipment (such as filter housing), steel reinforcement (rebar), deck steel (rebar), forming shells (housing light fixtures), diving boards, slides, ladders, pool cover motors, metallic fences, etc. Bonding clamps must be installed per their listing. Bonding clamps for direct burial or concrete encasement shall be brass, copper, or copper alloy.
Note: New to the 2007 CEC is the requirement for an Equipotential Bonding Grid to extend under paved walking surfaces for 3’ horizontally beyond the inside walls of the pool. The acceptable grids around the perimeter of the pool shall be permitted to be any of the following:
Note: The prime reason for grounding metal parts is to bring all metal parts around the pool to ground potential and thus reduce the threat of shock hazard.
- Structural reinforcing steel rods in the deck shall be minimum #3 rebar in an 18"X18" pattern at least 3ft. around the pool. The deck reinforcing steel rods shall be bonded to the pool reinforcing steel with at least one (1) #8 solid copper bonding jumper.
- Wire mesh at least 3ft. wide around the perimeter of the pool. The wire mesh shall be in the deck and bonded to the pool reinforcing steel with a #8 solid copper conductor at a minimum of four (4) points uniformly spaced around the perimeter of the pool.
- A #8 AWG bare solid copper conductor grid at least 3ft. wide around the perimeter of the pool, arranged in a 12"X12" pattern. The below –grade grid shall be secured within or under the deck media. The deck copper grid structure shall be bonded to the pool reinforcing steel with at least one (1) #8 solid copper bonding jumper.