Ek's Home   |   Forum   |   Chat   |   Electrical Links   |
	Subject - Checking Ground Sikes Hi, I have a digital multimeter and would like to know what range or setting the dial should be on to check earth groung of a paint spray booth. Thanks! David Hyatt I may be way off here but I don't think you can check earth ground with a multi-meter. I think you will need a very exspensive ground tester. I don't own one but seen one operated before. ricky I think you are asking how to make sure the metal in the spray booth is connected to an equimpent grounding conductor.First,spray booths are Class1 or class2 hazardous locations because of the flamable vapors etc.Article 516 in the code book covers these areas.All metal in a spray booth is to be grounded.Paint containers,hose connectors,brackets,everything.You were looking for the OHMS setting on your meter to verify continuity of metal parts to a known ground.If you're not sure how to do this,I would call an electrician.It only takes a spark. JimmyDee Article 561.10(6) Grounding. All electrically conductive objects in the spray area, except those objects required by the process to be at high voltage, shall be adequately grounded. This requirement shall apply to paint containers, wash cans, guards, hose connectors, brackets, and any other electrically conductive objects or devices in the area. The best known ground is the electrical system ground and good way also is to visually check to make sure there is a ground wire or conduit to the service panel. I have run an additional ground wire to the the wire leaving the panel going to the grounding electrode and connected them. Jim