| title | description | published | date | tags | editor | dateCreated |
|---|---|---|---|---|---|---|
electrical |
true |
2023-07-22 17:43:09 UTC |
markdown |
2021-01-27 23:20:04 UTC |
related: soldering
https://www.fluke.com/en-us/learn
Testing outlets:
https://diy.stackexchange.com/questions/97564/how-to-test-grounding-in-ac-outlets
Failures in Outlet Testing Exposed (test for dangerous reverse-polarity bootleg ground)
excerpt:
The gold standard method to identify [an RPBG miswired outlet] is to use a voltmeter connected to a known good earth ground to test each hot, neutral, and ground conductor in all outlets. But in reality, this type of test isn’t done except perhaps as part of a post-accident forensics investigation.
However, a simple test you can use is to check the outlet with a mid-voltage non-contact capacitive voltage tester (90V to 1,000V range), commonly referred to as an non-contact voltage tester (NCVT) When this tester is used on a properly wired outlet, you’ll hear a beep or see a light only when its tip is inserted in the “hot slot” of an outlet. However, when this type of tester gets anywhere near the front or ground contact of an RPBG miswired outlet, it typically beeps/lights from inches away, because the internal ground strap in the outlet will be biased to 120V, which provides a large electrified surface area (Photo 4). The green light on the left and center outlets indicates no or low-voltage (under 40V), while the red light on the right outlet indicates a hot ground condition (typically more than 40V for most standard sensitivity NCVTs). Although using a DMM to test between a known earth ground to each outlet contact is the gold standard, adding this NCVT check for RPBG outlets to your test procedure could save lives and dollars.