Inspector1 Posted November 24, 2016 Report Share Posted November 24, 2016 Any ideas as to why this is happening? This has only happened (a few times) when I'm checking the outlets in shops. When inserting the big tester into an outlet I get a bad ground reading. If I double check it with a smaller tester it shows the same outlet to be wired properly. Click to Enlarge 24.36 KB Click to Enlarge 24.94 KB [:-magnify [:-monkeyd Quote Link to comment Share on other sites More sharing options...
Marc Posted November 24, 2016 Report Share Posted November 24, 2016 I'm aware of shortcomings in a particular circuit design used by most of those little testers in the current market. Perhaps the larger of your two testers has a better design. You might consider the Tasco Line Load Simulator. I've an older model and have not seen anything that works better. Marc Quote Link to comment Share on other sites More sharing options...
mlparham Posted November 25, 2016 Report Share Posted November 25, 2016 Any ideas as to why this is happening? This has only happened (a few times) when I'm checking the outlets in shops. When inserting the big tester into an outlet I get a bad ground reading. If I double check it with a smaller tester it shows the same outlet to be wired properly. Click to Enlarge 24.36 KB Click to Enlarge 24.94 KB [:-magnify [:-monkeyd My Sure Test analyzer will detect false grounds but my pocket tester will not. The Sure Test will also indicate a false ground if the receptacle within 15-20 feet of the panel. Quote Link to comment Share on other sites More sharing options...
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