Ground Neutral Bonded Plug
Connect this plug into a 125v/15A AC socket on a generator to create a neutral to ground bond. This will resolve an open ground or open neutral or open ground such as an E2 error code caused by an issue in either your RV park's wiring or your Tesla charging system. Just plug into one of your 15 amp 125v generator outlets and all outlets will have the Neutral Ground bonding.
- Two pole, 3 wire grounding
- NEMA# 5-15P
When a floating neutral generator won’t work…
So when your RV or other device is powered by its on-board generator, this Ground-Neutral bond connection is created by the transfer switch set to generator mode. But when the transfer switch is set to receive shore power, your RV expects the external power source to bond its Ground and Neutral wires together.
Now, if you have an inline voltage monitor system from a manufacturer such as Surge Guard or Progressive Industries, your voltage monitor is checking for the Neutral and Ground voltages to be very close to each other, probably within 3 volts or so.
This works well if you’re plugged into shore power that’s properly grounded and bonded, but this voltage protector can be tripped off by plugging your RV shore power plug into a portable generator without an internal Neutral-Ground bond. If you don’t have a voltage protection device on your RV, then you may never know that your generator has a floated neutral (unbonded Ground-Neutral bus).
Generator types
Contractor-type generators such as your Coleman 5000 are generally N-G bonded internally, which is why it runs your RV just fine. However, many portable inverter generators from companies such as Yamaha and Honda have floated Neutrals (no internal Neutral-Ground bond) since they expect an external Neutral-Ground bond to happen somewhere else. And while RV-approved generators may have an internal Neutral-Ground bond, it seems that many of the most popular portable inverter generators from Honda and Yamaha have floating neutrals.
If you don’t have any sort of Electrical Management System (EMS)/Advanced surge protector, or you’re not powering sensitive electronics or a Plug-In Electric Vehicle, you probably don’t need a Neutral-Ground (N-G) bonding plug at all... And when you need it, you’ll really need it.
Note that this is a generator-only Neutral-Ground bonding plug which should be only plugged into a portable generator while powering your RV. It should never be used to create a bootleg ground in a residential or RV outlet that was not properly wired with a ground conductor.
This image shows an orange Ground to Neutral Bonding plug in use on a generator (not included)
Here is a video on testing for Neutral-Ground bonding demonstrates an easy way to test your generator for a floating neutral and how to neutral-ground bond it. The video also explains how some RV Electrical Management Systems require a Neutral-Ground bond on a portable generator to operate properly. youtu.be/Wr3ZKDN-8Go?t=8
videos.etrailer.com/static/images/video/review-hughes-autoformers-ground-neutral-bonded-plug-for-generators-hu33fr.webm