KRXNY 48v 3000W DC to AC 240v inverter, no earth?

I recently purchased this inverter KRXNY 3000W Pure Sine Inteverter, and I've found it doesn't appear to have any earthing point. I have setup earth for my off-grid setup and have earth to a common busbar that connects the panels and solar charger, but assumed the inverter would require an earthing connection.

It's a 240V AC inverter that has all three connections, power, neutral and earth. So without that earth, I'm not sure how it's being earthed (I know it's not). It's connected to +/- of the common +/- busbars. It has two 240v AC plugs and an AC 3 wire connection possible.

How do I go about creating a proper earthed system? Is it possible? Is it an issue with the type of inverter I've gotten? I've looked in the manual, and I've also tried to find a decent online source. But unable to find specific to this brand, in Australia, at least.

Any help is appreciated.

This guy mentions earthing issues with cheap inverters whose designers didn't really include consideration for it in their design:
The comments in this video discuss some good points.
What I took away from it was:
- Don't share a ground to neutral link (eg. in mains powerboard) with another ground to neutral link (eg. to be installed into this inverter.)
- Quality inverters take notice of an existing ground to neutral link on an incoming line (eg. if it's connected to the mains) and disconnects its own ground to neutral link.
- If you do have your own ground to neutral link in the inverter, make sure they ground link is something like at least 12 metres from any other copper-rod-in-the-ground points (eg. mains ground).
- Issues to do with non-isolation of the DC to AC side of the inverter and potentials existing between output (AC) and input (DC) connections.
- Isolation transformers (AC to AC, removing potential relation to DC side of inverter.) Cost a fair bit and will use more power.
- A heads-up that the inverter might be wired in such a way that connecting its chassis to its neutral may damage it.
The gist I got from the video was that to do things properly with grounding, basically you need the manufacturer to be able to say how their's deals with it and they should be able to tell you how to wire in relation to ground/s.

I guess earthing it's chassis and its neutral would risk 'blowing it up'.
I'm not sure how measuring potentials between its active/neutral and its positive/negative would give any clues to this.
I guess your seller will just say "yeh nah give it a go, i'll sellyanotha!"

I saw a different video with a KRXNY inverter where the 2 outlets on the inverter didn't even have uniform A-N joins (the left pin was active on one of the outlets and neutral on the other.)
I've just purchased a KRXNY 3500w 24v inverter and they haven't swapped the active/neutral, but the ground pins aren't connected to the case.
I haven't bothered measuring between the ac/dc sides, as I'm only using it for back up power and to be honest I'm not fussed about leaving them floating.

https://diysolarforum.com/threads/ground-neutral-bonding-the-inverter-gfci-question.43849/

The video in this linked thread shows that grounding the output made the 'low voltage' battery in fact high voltage, capable of pushing plenty of current, creating a situation where there would in fact need to be an RCD on the battery side as well.
Connecting that neutral to the chassis would probably damage the inverter (I remember coming across something in a lot of cheap inverter's DC side connected to the chassis; can't remember what exactly.)

blinkybill said:

This guy mentions earthing issues with cheap inverters whose designers didn't really include consideration for it in their design:

Click to expand...

It's a legal requirement for inverters and generators sold in Australia that do not have an integrated RCD to not provide earthing. There must not be a neutral/earth link in the unit. There must not be any connection to the earth terminal of any socket outlets on the unit. The principle employed is isolation. A double-fault is required to present a hazardous situation. This is preferable to having earthing present which would only require a single fault to expose the user to a possible shock or electrocution.

Do not modify things that you do not understand. Do not follow the recommendations of unqualified people on youtube. Do not configure items contrary to their intended application.