FIELD: multiple- component hollow metal sections, primarily metal installation channels. SUBSTANCE: electricity- conducting joint is provided between channel cover and its bottom part. Novelty is that potential equalization point is shifted to cable terminal in which loose ends of clamps are provided with pointed horns of contacts which, when clamped with loose shaped ends of side walls in bottom part of channel, destroy their surface on purpose to form electricity conducting joint. EFFECT: reduced cost and facilitated procedure of wiring. 6 cl, 3 dwg
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