Trailer is tripping a GFI in my garage....
I have a 2012 Dutchmen trailer that I keep plugged into the side of my garage. Normally not its a problem but it has begun to trip a GFI plug in my garage. I have narrowed it down to one circuit bre...
Forum Discussion
Most "how GFCIs work" posts on the Internet are clueless about how neutral-to-ground detection works. There is a second fault detection mechanism in the GFCI, apparently unknown to almost all of the experts. Read about it here http://www.rhtubs.com/GFCI/GFCI.htm, scroll down to "How does a GFCI work:" . If that's not convincing enough, pull the lm1851 datasheet at www.ti.com/lit/ds/symlink/lm1851.pdf, and read the same thing on page 6. There's a newer technique where the chip is somehow able to measure the impedance between the downstream neutral and ground without the additional ground-neutral coil. The ncs37000 chip is an example of this. Its datasheet www.onsemi.com/pub/Collateral/NCS37000-D.PDF mentions it on pages 4 and 6, but there's no explanation of how it is implemented.
