W-R-550A, FEDERAL SPECIFICATION: ROD, GROUND (WITH ATTACHMENTS) (12-JUN-1975) [S/S BY A-A-55804]

W-R-550A, FEDERAL SPECIFICATION: ROD, GROUND (WITH ATTACHMENTS) (12-JUN-1975) [S/S BY A-A-55804]., This specification covers grounding electrodes with connecting cables and provisions for securing attachments to exposed noncurrent-carrying conductive materials of electrical equipment in mobile shops, temporary or permanent power stations, temporary substations and to establish grounds in areas devoid of underground water-piping systems or equivalent.