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Tier 1 (vector + text layer): read directly via rendered crops at 4-5x zoom, no OCR needed. Page has /Rotate 90 (mediabox 1728x2592 -> displayed 2592x1728); coordinates below are in the displayed/rotated space, matching page.rect, and were checked against rendered pixmap crops at each note's on-screen location. The sheet's only repeated device symbol is the pair of quad-receptacle glyphs drawn in Detail 2's elevation view -- too few (2) to justify the symbol_scan.py contact-sheet pipeline; read visually instead and recorded as a small symbol_group of 2.
Names come from: no legend on this sheet, so NECA 100-2006 is what a name rests on. It is the baseline for what a symbol MEANS, never for matching shapes — proportions differ per firm. Confirming a name here is a correction, and corrections are what build the firm's file.
Scale is UNSET. Nothing on this sheet has been measured. The reader declined to infer a scale rather than guess one, so there is no raceway and no branch wire off this sheet — together the largest block of material on a job of this kind. Set it from the title block and measurement becomes available.
RRE