STANDARDS Standard IPS-E-EL-1001 Engineering standard related to electrical system design Standard NFC 17-102 French standard for the design, implementation and testing of electronic lightning arresters Standard UL467 American standard for the manufacture and testing of grounding and bonding equipment Standard IEEE837 American standard for permanent connection in the earthing system of electrical substations Standard A 123/A 123M Standard for hot dip galvanizing Standard A 475-3 Standard for harness wire PVC pipe standard Standard for Pvc pipe standard DIN7168 Standard for general tolerances