42 11TH ST - ELECTRIC TESTING LETTER FOR POOL / industrial Electric Testing, Inc. EC13004105
TECHNICAL REPORT
DAVID PRUETTE'S ELECTRICAL SERVIRE C E I VE
for work performed at D
BELILES RESIDENCE
4211th Street JUN 6 2017
Atlantic Beach, Florida
Job No. 17-8239 Building Department
Permit 16-pool-144 City of Atlantic Beach, FL
5/30/17...Testing of pool bonding was performed at the above referenced address on May 16,
2017. Additional verification of equipotential ground ring beneath the paver deck was
performed May 26, 2017.
The pool equipment was inspected and tested for proper bonding as stated in NEC Section 680-
26, which requires the following to eliminate voltage gradients in the pool area:
The following parts must be bonded together:
1. Metallic Structural Components—all metallic parts of the pool structure, including the
reinforcing metal of the pool shell, coping stones, and deck.
2. Underwater Lighting—all forming shells and mounting brackets of no-niche luminaries
(fixtures). Exception: A listed low-voltage lighting system with non-metallic forming shells
not requiring bonding is used.
3. Metal Fittings- all metal fittings within or attached to the pool/spa structure. Exception:
Isolated parts that are not over 100 mm (4 in.) in any dimension and do not penetrate into the
pool structure more than 25 mm (1 in.) shall not require bonding.
4. Electrical Equipment-metal parts of electric equipment associated with the pool/spa water
circulating system, including pump motors and metal parts of equipment associated with pool
covers, including electric motors.
5. Metal Wiring Methods and Equipment- metal-sheathed cables and raceways, metal piping,
and all fixed metal parts that are within 5 feet horizontally of the inside walls of the pool, and
within 12 feet above the maximum water level of the pool, or any observation stands,towers
or platforms,or from any diving structures, and that are not separated from the pool by a
permanent barrier.
The parts specified above shall be connected to a common bonding grid with a solid copper
conductor, insulated,covered or bare, not smaller than 8 AWG. Connection shall be made by
exothermic welding or by pressure connectors or clamps that are labeled as being suitable for the
purpose and are of stainless steel, brass,copper or copper alloy. The common bonding grid shall
be permitted to be any of the following:
1. The structural reinforcing steel of a concrete pool where the reinforcing rods are bonded
together by the usual steel tie wires or the equivalent.
2. The wall of a bolted or welded metal pool.
3. A solid copper conductor, insulated, covered or bare, not smaller than 8 AWG.
11321 Distribution Avenue West • Jacksonville, Florida 32256 • (904)260-TEST • Fax (904)260-0737
Branch Office: 201 NW 1st Avenue • Hallandale, Florida 33009 • (954)456-7020
4. Rigid metal conduit or intermediate metal conduit of brass or other identified corrosion-
resistant metal conduit.The following items were identified as required to be bonded
together:
• Pool light niches (2)
• Spa light niche
• Heater
• Pump motors
• Equipotential ground ring(beneath deck)
Furthermore, all bonding must be accomplished utilizing a solid copper conductor, insulated,
covered or bare, and cannot be smaller than No. 8.
To determine that the items listed were directly connected electrically(bonded), a two-point
ground test was performed. Testing was performed utilizing an AEMC 4610 ground megger.
The two-point test essentially is a resistance test between a reference point and another point
under test,wherein a low resistance result indicates bonding.
As the paver deck was installed prior to a visual inspection of the ground ring installed as the
equipotential ground ring, it was requested that one of the four connection points be exposed.
From this test point, it was verified that a direct bond between the visible bare copper wire, the
exposed rebar and the bare copper conductor at the pump motor existed. Additional (3)points of
connection were not verified.
Test results indicate the bare copper conductor, pump motors, heater,equipotential
ground ring and the light niches are directly bonded.
All test results are listed on a separate test report included with this report.
Additional information:
The reason for ensuring the bonding of metal parts (ladders, handrails, water-circulating
equipment,forming shells, diving boards, etc.) to a common bonding grid(pool reinforcing steel,
pool metal wall, or an 8 AWG solid conductor) is to ensure that all such metal parts will be at
the same electrical potential. This grid reduces any possible shock hazard created by stray
currents in the ground or piping connected to the swimming pool. Stray currents can also exist
in nonmetallic piping because of the low resisitivity of chlorinated water. Because corrosion is
normally associated with the wet conditions of swimming pool areas, wiring and connections
should be checked periodically, especially bonding connections between the 8 AWG copper
conductor and,for instance, an aluminum (or other dissimilar metal) ladder.
If you should have any question regarding this report or the services performed,please do not
hesitate to call.
Sincerely,
1g
Gary Benzenberg, P.E.
/ li, Industrial Electric Te
�liA�• Inc. EC13004105
EARTH RESISTANCE TEST RECORD
CUSTOMER: David Pruette's Electrical Service
LOCATION: Beliles residence—42 11th Street, Atlantic Beach, Florida
DATE: 5/16/17 TYPE OF SOIL: N/A
JOB NUMBER: 17-8239 MOISTURE CONTENT: N/A
TECH: GS TYPE OF GROUND: Pool bonding
TYPE TEST: Two point
TEST EQUIPMENT: AEMC 4610
GROUND GROUND MEASURED LEAD-TO-LEAD RESISTANCE(0)
REFERENCE UNDER TEST
RESISTANCE((1) RESISTANCE(11) (Measured-lead)
Bare copper wire Spa light niche 1.77 1.59 0.18
Bare copper wirePool light niche(shallow) 1.70 1.59 0.11
Bare copper wire Pool light niche(deep) 1.69 1.59 0.10
Bare copper wire Exposed deck wire 0.36 0.33 0.03
Bare copper wire Exposed(rusty) rebar 0.66 0.33 0.33
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COMMENTS: Permit#: 16-pool-144. Bond wire isolated from circulating equipment
prior to performing tests listed above. Visual confirmation of connection
(bonding)to heater and pool pump motors.
Visual confirmation of connection of bare conductor to rebar at exposed
(paver)deck equipotential ring—northeast corner(see photo).
11321 Distribution Avenue West • Jacksonville, Florida 32256 • (904) 260-TEST • Fax(904)260-0737
Branch Office: 201 NW 1st Avenue • Hallandale, Florida 33009 • (954)456-7020
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BELILES RESIDENTIAL POOL — DECK EQUIPOTENTIAL RING
Pavers removed to expose connection of bare copper conductor ring connection to rebar.