STEP 19B: System/Site Continuity and Ground Checks

1. Turn all PDU breakers to the OFF position.
2. System Continuity Check: Verify that less than 1 ohm of resistance exists in the PDU connections to the gantry (HVDC Run #50, HVAC Run #51, LVAC Run #52) and console power plug (LVAC Run #53).
3. System Ground Check: Verify that less than 1.0 ohm of resistance exists between each of the system grounding locations.
4. Site Ground/Continuity Check: Set an ohmmeter to the lowest scale and verify no continuity exists between the PDU TS2 and TS3 terminals (hot wires) and A1 breaker vault ground.

Labor:	1 person; 0.5 man-hour
Tools:	Digital VOM capable of reading 0.5 ohms
	50 ft of #18 wire
	600 VAC meter leads