The COPPER KEEPER method of wire “locking” is simple but effective. The wires are inserted into the pockets in the rubber stopper. The stopper is then inserted into the conduit. Once in place, the compression bolt is tightened. As the proper torque is approached, the rubber stopper is compressed against the conduit and wires. This prevents the wires from being easily pulled through the conduit, thus “locking” the wires in place. The Copper Keeper has four wire pockets in which wire is to be inserted. A reducing sleeve is provided to accommodate a larger range of wire sizes. If the conduit has fewer wires than stopper pockets, a plug is provided to fill the unused pocket. Multiple small wires - whose combined diameter equals the single conductor - may be retained in a single pocket Once COPPER KEEPERS are installed in each opening of the conduit, the wire is “locked” in place preventing the easy removal. Resistances of over 150 pounds pull can be obtained by the proper installation of Copper Keepers.

COPPER KEEPERS, when installed makes an almost water tight seal, keeping out dirt and other debris that enter the conduit when “duct seal” is used.

The Copper Keeper is designed to allow removal by authorized personnel using a security keyed socket tool.

Installation steps:

1) Determine wire sizes to be installed into the stopper

2) Add or remove sleeves and plugs to accommodate the wire sizes. ( Fig. 1)

3) Insert wires into appropriate stopper pockets. (Fig.2)

4) Insert stopper with wires in place into the conduit. The stopper should slide on the wires as the Copper Keeper is inserted into the conduit.

5) Insert all except the last inch of the unit into the conduit opening. (Fig 3)

6) While holding the un-inserted portion of the rubber stopper extending outside the conduit – begin to tighten the compression bolt.

7) As the compression bolt is tightened, the stopper diameter will increase. Continue until the rubber has expanded to just snuggly slide into the conduit.

8) Now, push the Copper Keeper into the conduit. The wire should still slide in the pocket or sleeve. If the fit is too tight, loosen the compression bolt until it will allow fitting into the conduit.

9) To properly insert the copper Keeper in place, push it approximately 1/4” past the opening of the conduit. (Fig 4)

10) While holding the wires to help stabilize the Keeper, continue to tighten the compression bolt to the recommended torque for the size Copper Keeper being used. (Fig 4)

11) The Copper Keeper is now properly fitted into the conduit.