OK, so I started a “little” project to add solar to my boat and while making a box for my battery with my skill saw, while on shore power, some wires melted. I discovered in fixing this issue, that 1. Shore ground was not connected to my Mastervolt Mass GI input, 2. There was no (required) breaker/G…

in re to GFCI they look for current leaving them to be the same as the current returning, if there is less current returning a difference of 5ma in US and 30ma else where it trips, it does not need a reference to ground as it only looks that current leaving and returning, if less returns it is leak…

first post “My new inverter needs to be grounded somewhere” again you should find someone qualified to help or do the work, I don’t think you should be undertaking this work.

Oh yeah, I forgot the inverter has a ground on the frame of it, on the back… The 230V I was referring to was coming from the Mass GI. Anyway, I guess that doesn’t change your post. Thanks :slight_smile: And yeah, I need to find a good boat electrician!

Just to add something into the mix, inland boat in the UK, steel hull. Our regulations are that all batteries are connected to the hull at a single point, usually the engine bearer as the engines are mounted on rubber mounts, so the engine block gets connected to this same point. The 230V ac also is…

Hi Pwfarnell, I guess I just thought it strange to connect the isolation transformer’s neutral and ground, because it’s AC. In AC as I understand the current pulses from the positive then from the neutral so both lines are ‘hot’ which is why you can plug into an AC socket upside down and it doesn’t…

Ok, sorry my mistake, i didnt look up what that device was and just assumed its an inverter. I dont think it changes much, since the output neutral of it would also need to be grounded

OK great, thanks for clarifying :slight_smile:

As you already noticed, grounding is not an easy topic. Im a trained and certified electrician, working for almost 20 years mostly in larger low voltage systems including generators, and i dont know all of it. And theres certainly still today discussions to be had between experts from the regulatory…

[image] jrmartin505: I guess I just thought it strange to connect the isolation transformer’s neutral and ground, because it’s AC. In AC as I understand the current pulses from the positive then from the neutral so both lines are ‘hot’ which is why you can plug into an AC socket upside down and …

Chrigu and Pwfarnell, Thanks for both of your replies, very interesting. This has been a very informative thread! So I guess that the actual instructions list that I had was correct, as crazy as it sounded. Plus I need to ground some extra metal stuff that I hadn’t considered. Plus I need to put …

Think theres a language barrier here. AC power is Active and Neutral. Some countries also have earth which is exactly that a high conductive metalic rod in the earth usually copper and usually does f all in places like Australia with no moisture in the ground. Your AC power source never goes to grou…

Boat Electrical Grounding: 230V + AGM- + LifePO4- to Same Ground?

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Boat Electrical Grounding: 230V + AGM- + LifePO4- to Same Ground?

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