UPS Earthing System You must bond the grounding earthing conductor, The Grounding earthing According to 250.30, you must bond the grounded circuit conductor — usually the neutral of UPS — at its source to the equipment safety grounding conductor. The grounding circuit conductor must also be bonded to a local grounding electrode Chemical Earthing conductor that is connected to the nearest grounded building steel work, metal water pipe, or other effectively grounded man-made grounding electrode. Consult 250.66 when sizing the grounding Earthing electrode conductor for a separately derived system for the derived phase conductors. You must also connect the grounded conductor of the derived system to the grounding electrode. Chemical Earthing supplier in Delhi