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Convert corner ground delta service to 3 phase ungrounded delta servic
The existing old 600 amp, 240V 3 phase service is corner grounded delta. The main fusible service panelboard is rated for 1 phase (with two bus-verified after opening the switchboard). All the HVAC loads fed from this panel are 3 phase loads fed from 1 phase rated switchboard. This installation...- electric73
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- Forum: IEEE (electrical) Code Issues
