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| View Poll Results: Do you have a grounding probe in your tank? | |||
| Yes |
   
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16 | 31.37% |
| No |
  
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35 | 68.63% |
| Voters: 51. You may not vote on this poll | |||
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#20
11-14-2005, 02:18 PM
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A GFI works by comparing the current on each leg, hot and neutral. When there's a ground fault, current in does not equal current out (some is flowing to ground) the device trips.
For a GFI to work when there's a problem, there needs to be a alternate path for current to flow to ground. This can be from a device with it's own ground, a stand alone ground probe, or the human body. 
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