bracket / working grounds


Senior Member
Mexico, Spanish
I'm translating a document on grounding methods for tree trimmers who work next to power lines, and would like to know what a bracket / working grounds is. I already found out what EPZ grounding is in Spanish, but can't find what bracket /working ground is in Spanish.

Sample sentence:
Where EPZ grounding can not be used bracket / working grounds SHALL be placed on each side of the work area as near as possible to where the work is being performed

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