Search results

United we stand, divided we fall. It doesn't matter which side you are on we will all lose if we don't come together and listen to each other. We have to think critically and not emotionally. And BTW they are all crooks.

I'm not sure this correct. Most small inverters that I have checked have an internal bond and if they have an incoming feature they will auto unbound when connected. It just seems that most of the sub-3Kw units were designed for mobile use and not commonly connected to a service panel...

Is the inverter internally bonded? Most smaller inverters are set up for mobile use and have a N-G-case bond. What about wiring the panel up as a sub-panel without a N-G bond? Most of these inverters have re-settable breakers that would clear a fault.

After reading through this thread I still do not understand why it is desirable to bond at the inverter. It is the source, but if it is connected to a panel with a N-G bond it will clear fault if there is a short in the system. The hot leg should be run through a breaker at the panel and the...

I had looked at the Pheonix, but Victron does not offer it in a hardwire config. I really don't want to run an extension cord to a main panel. I already have it wired with 10ga romex for the incoming power. It is odd to me that no company really makes small offgrid inverters for stationary...

The NG-bond on the Phoenix can be switched, but no hard wire option. The Multiplus does it all, but is the most expensive option since it is an all-in-one unit with inverter and charge controller. I have a 12V 200AH SOK battery. Was planning on trying to do 12V system, but it seems to be...

Price is not too much of a concern, maybe sub $1k. single phase 120VAC/24VDC, US, and off grid.

I'm looking for a small 24V 1-2kw inverter that can be hardwired. Preferably one that does not have an internal N-G bond.

Using the breaker panel as a main with a bonded neutral and ground would be correct. I may have to sell my inverter and by one of those units. I chose the Jupiter 3kw because it had a provision to be wired instead using the typical 110 receptacle. There is no way I can see to un-bond the...

I have the same issue. What I have found is that most small inverters are internally bonded. This means that the panel should be wired as a subpanel to prevent having a double bonded scenario. I do not know how well this will work. Some say the panel could become a conductor because of the...

After reading about 20 pages from a few different threads I have come to the conclusion that the inverter is internally bonded and has relays that will open when an AC input is connected. This seems better for a mobile system. My application is a hobby shed and this might not be ideal. The...

I’m not really following what you are saying. What is the safety benefits for this application? This is still high impedance grounding.

So my dilemma is the inverter is internally bonded. The neutral, ground wire and external ground lug are all connected. If wiring to a panel should the ground wire go to the neutral/ground bus in the panel and not use the external ground lug? Or with this inverter do I have to set up the panel...

It appears that the build up is much higher in grid attached systems. In an off grid system the only build up would be generated by the electronic components. Also is this a substantial personal safety concern? GFCI is a low impedance sensing device. It will still function without an earth...

We are specifically discussing structures that are not grounded. Wood structures on pier blocks, gravel or pavers, etc. If it is a structure that is grounded or partially grounded from a pad, plumbing etc there is no negatives from an earth ground. An off grid application’s AC & DC voltage...

For this application all of the components are grounded together by the neutral/ground and would have some capacity to dissipate some static electricity. Surface area and humidity are a factor. A near by lightening strike is a concern for the equipment. Although the probability of a direct...

The static build up is supposedly not from lightening, but from the current running through the system. This is supposedly one of the most critical issues for a grid connection. Is it an issue for a non-grid and a small system?

I have no idea what you’re talking about.

We are not talking about grounding in general, but a very specific type and how it benefits an off grid application. Do you have specific examples?

We should evaluate this from the most common use which is a grid connected service and see how the benefits carry over. Then evaluate the utility of each for an off grid application. From my understanding there might be three or four. 1. Static electricity build up in the system, 2...

The main benefit of an earth ground is to handle the static build up. Is that substantial on a small structure and system? From my research it is more of a factor with a grid connection. The video below was the reason I started to look a the benefit for off grid. It is not the part of...

I started a thread about this topic a few weeks ago. My thought was if it is a small system on a structure that is not naturally earth grounded there might be some benefit to not earth ground. Naturally grounding meaning on a pad with rebar, metal plumbing, metal building etc. From my research...

Only one standalone panel. So, if it has the N/G bond it would be considered the main and a sub should have a separated ground and neutral. Should every downstream device/component have the neutral and ground separate?

I often read or see vids where people refer to their offgrid systems AC panel as a sub-panel. If there is only one AC breaker panel being fed by an inverter is this not wired as a main panel and not a sub?

From my understanding with a MPPT charge controller it is ok to charge a 12v battery with 24v from the panels. Can this work with a 12v inverter? My components are listed below. 4 x Renogy 100w panels Epever BN series MPPT 40w charge controller 12v 3000w inverter

A few manufacturers claim to just isolate the copper from the aluminum with a stainless-steel washers.

I'm not sure about the transformer forming complete isolation. The function is such that more in results in more out. What if the ground from the transformer is continuous to the actual grid? What I'm questioning is not going to affect the low impedance side of the safety equipment which is...

That is the point physics has not changed, but the application has. I have described it the best that I can. The needs are different. I’m talking about a very specific application, which is small off grid systems. In order to understand my point you have to study grid systems and the benefits...

Took a bit to digest that. So in general an earth ground on an off grid application will mainly provide dissipation of static electricity. Most of the safety features in electrical systems are for low impedance shorts and they will function regardless if there is an earth ground. When a...

After going back and reading through this thread I think there is a misunderstanding of what I mean. I‘m trying to compare two fully grounded systems where all of the components and appliances are grounded to the service. All devices will function safely and any hot to neutral or ground will...

Why, because there is several types of grounding. Grounding components together and bonding are not the same as grounding to a grounding rod. There are lots of vehicles and structures that use an isolated ground system. They are grounded, but not to the earth. I believe there is a...

It can work in both directions. With a real earth ground you have a possibility of completing the circuit from hot to real earth ground. With a floating ground it would require an additional system short to real earth and than contact to the system neatral/ground. I guess I think this logic...

If the system and structure are isolated from the earth is there anyway a person can be shocked from the earth? Conversely if the system uses an earth ground can’t a person now be shocked between the hot and anything that is earthed? Eg. A shed that has a grounding rod installed and the...

Wouldn’t a floating/isolated ground be adequate or even better for a small off grid structure such as a shed? From my understanding vehicles, planes etc only get struck by lightening because they move in the way of the event. I see your from south FL, I grew up in Pompano and Ft Lauderdale. I...

What if it was an off grid scenario RV application? Can’t all of the electrical/metallic components be grounded/bonded together to prevent shock without an earth ground? One of my concerns is that the earth ground field sets up a situation where an individual can be in a position to complete a...