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Series H:
Mounting and Joining Conductors

MOUNTING

Mounting - It is suggested that the hanger clamp bracket be attached to the runway beam by welding or bolting. Conductors should be spaced 5" apart; however, a minimum of 3-1/2" is acceptable. Hanger clamp brackets will require 9/16" holes for hanger clamp bolts of 1/2". Conductor hanger clamps should be slid onto the rail and positioned relative to the approximate hanger clamp bracket so that when the rail is raised into place the hanger clamps may be bolted to their respective bracket. Hanger clamp cross bolts should be tightened so that the rail will slide easily, but will be securely supported. To properly support the conductor and to keep standard rail overhang to 24", space the first two brackets on 6' centers, all other brackets on 10' centers.



Anchor Clamp Kit for use with "H" and "K" hangers is an insulated keeper straddling each side of the standard hanger clamp. The hanger clamp mounting bolt is replaced by a cup point set screw that is tightened against the keeper plate at the desired hanger bracket location. On standard non-spool hangers, the set screw becomes the mounting bolt. On spool type hangers, the set screw is threaded into the base of the insulator spool.

An anchor hanger clamp comprises the selected systems hanger plus an anchor clamp kit or modification. They are designated with the suffix "A", i.e. HA-100HA



Plastic Hangers are a slide-on insulating hanger for use on insulated series H Conductors. They can be used in place of the coated or coated-plus-insulator series hangers. Anchor type plastic hangers come with a drilled hole in the vertical stiffener on each side of the hangers. When the anchor and conductor are positioned as required, a drill is run through the conductor bar so that a threaded rod can be installed through the assembly, with each end protected by an insulating acorn nut.




JOINING


Conductors are joined by a bolted splice assembly, comprised of two stacked spring plates located inside the hollow portion of the conductor so that as the assembly bolts are tightened, the stress goes to the outside of the concave strips and the strip edges align the adjacent conductor sections. The assembly, comprising the aluminum splice bars mounted on the outside top of the conductor, is torqued down by the steel bolts to 100 inch lbs. The longitudinal cavity in the main conductor body may be used as a heater wire location if heating is required.



To join conductor sections, abrade bare aluminum sections with a wire brush and coat surfaces with Alcoa #2 compound. Assemble with compound in place.

Tighten assembly nuts until the joint is fully torqued. Snap the insulating splice cover into place to complete the joint. Make certain that the splice joints are at least 24" away from a hanger clamp to allow for adequate expansion and contraction movements of the rail assembly.