A copper ground bar is mounted to a wall using wall mounting brackets with hole centers matching the Nema double lug configuration. Insulators separate the ground bar from the brackets. Five-eighths-inch lockwashers and five-eighths-by-eleven-inch by one-inch hex head cap screws secure the assembly together.
5 4 3 2 1 1 2 5 3 4 COPPER GROUND BAR, DIMENSIONS AS NOTED IN GROUNDING SYSTEM RISER DIAGRAM, NEWTON INSTRUMENT CO. OR EQUAL. HOLE CENTERS TO MATCH NEMA DOUBLE LUG CONFIGURATION. INSULATORS, NEWTON INSTRUMENT CAT. NO. 3061-4(OR EQUAL). 5/8" LOCKWASHERS, NEWTON INSTRUMENT CO. CAT. NO. 3015-8(OR EQUAL). WALL MOUNTING BRACKET, NEWTON INSTRUMENT CO. CAT NO. A-6056(OR EQUAL). 5/8-11"x 1" HHCS BOLTS, NEWTON INSTRUMENT CO. CAT NO. 3012-1(OR EQUAL). 7/16" 2" 3/4" 1 " GROUND BAR
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