FEEDER BUS DUCT WITH IMPROVED HOUSING STRUCTURE

摘要

A plurality of wide flat insulated bus bars are compressed in flatwise adjacent relationship between inwardly bowed aluminum side members and formed sheet metal edge caps. The side members have reflex portions formed along opposite edges which extend angularly outward and are cammed inward by rail portions on the caps to compress the sides substantially flat on the bus bars and bias the bus bars firmly together. The resiliently bowed sides and reflex portions compensate in assembly for an accumulation of tolerances in the bus bars and their insulation. Bolts are used to secure the sides and caps together, and exaggerated clearance openings are provided for the bolts to permit the caps to be forced firmly against the bus bars with the bolts loosely in place before being finally secured.