An electrical riser diagram details the connection between two panelboards rated at 208/120 volts. The upstream panelboard is rated at 225 amperes, labeled 1J5-R2 with panel tag 4, and feeds the downstream panelboard rated at 100 amperes, labeled 1J8-R with panel tag 14. A feeder line links the two units with a designated circuit or detail reference number 6.
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