3/4” Kenny Clamp -3/0-4/0 Connector

C (UL) US

LISTED 2DF3

Kenny Clamp® Compression Connector, US Patent No. 7595455, Selection Instructions for Grounding Electrode Conductors

Selection of proper size UL listed Kenny Clamp® Compression Connector is based on the grounding electrode conductor size from Table 250.66 of the 2014 National Electrical Code or engineering design. The grounding electrode conductor is sized in accordance with the largest service entrance conductor or derived phase conductors for separately derived systemsfrom Table 250.66 NEC®. The 4/0 Kenny Clamp exceeds Table 250. 66 requirements, but engineers tend to oversize the grounding electrode conductor based on design..

Installation Instructions for the Kenny Clamp® Compression Connector

If insulated, remove the insulation from the grounding electrode conductor, one-inch above and below the Kenny Clamp connector. Punch out a 3/4 inch knockout in the bottom or top of the panelboard enclosure, switchgear or switchboard. Remove paint from both sides of the enclosure knockout to ensure good electrical continuity between the connector and enclosure. Install the Kenny Clamp Compression Connector through the knockout and attach it to the enclosure using the 3/4 inch steel locknut prepackaged with the connector and tighten the locknut to 250 inch pounds to the enclosure. Loosen the brass nut on the connector and insert the 3/0 or 4/0 AWG copper or aluminum conductor through the center of the internal stainless steelsleeve located inside the body of the connector. Proper care should be taken in Canada to select the correct sleeve for copper compact wiring or copper concentric stranded wiring .Tighten and torque the brass nut around the conductor at 250 inch pounds. Terminate the 3/0 or 4/0 AWG copper or aluminum conductor on the grounded termination bar (neutral), in the enclosure for service installations. Equipment grounding conductor terminations located on the load-side of service are required to be terminated to the enclosure or grounding bar. Finish attaching the grounding electrode conductor to the electrode, i.e. steel, water, rod, pipe concrete encased using the appropriatelisted connector or clamp for the selected electrode. Your installation is now complete.

Kenny Clamp® Compression Connector sizes for Separately Derived Systems, panelboards and enclosures.

Select the minimumgrounding electrode conductor size fromTable 250.66 NEC®.On the side, near the bottom of the transformer enclosure drill or punch a 3/4” knockout, remove any paint from around the drilled or punched hole on both sides of the enclosure. Install the Kenny Clamp® Compression Connector through the 3/4” knockout and attach it to the enclosure with the prepackaged 3/4” steel locknut and tighten to 250 inch pounds. If the grounding electrode conductor is insulated remove the conductor insulation one-inch above and below the area where the conductor makes contact with the Kenny Clamp. Loosen the 1-1/4” brass nut on the body of the Kenny Clamp,install the grounding electrode conductor through the center of the stainless steel internal sleeve located inside the Kenny Clamp. Tighten the 1-1/4” brass nut to the torque requirements from the Table below or 250 inch-pounds. Terminate the grounding electrode conductor to XO. Your installation is now complete.

Minimum Enclosure Thickness

Wire size AWG Enclosure thickness

3/0.105

4/0.105

Torque guidelines for conductors using the Kenny Clamp® Compression Connector

Copper or Aluminum Tighten Torque,

Conductor Size Pound Inches

3/0 AWG 250

4/0 AWG 250