question

info-6 avatar image
info-6 asked

Multiplus 12/3000/120-32 on AC in L1 and Neutral are swapped. What happens?

Hi there,
it might be a "stupid" question, but I couldn't find any really clear answer to it:
In the manual (and also the terminal inside) it is stated that L1 and Neutral must not be exchanged, but I could nowhere find and explanation why and what would happen?
Background:

I have just installed a Multiplus II in my RV and grounded also the Multiplus to chassis. Here in my home I checked polarity and connected accordingly, everythings works as it should, incl. RCD function. But if I'm travelling I never can be sure whether AC in is correctly wired.

Does this matter to the Multiplus or the RV distribution at all? Or is there a protection which ensures that on AC out always L1 and N are correctly set?

Further:

I have installed ESS Assistand and using it while I'm at home. For this purpose I'm using my 8 kWh battery as a buffer for nighttime and feeding into my house permanently around 200W (limit the power and set Dynamic ESS to "Sell".

I intend to switch off Dynamic ESS when I'm travelling. Is this enough or should I do some other measures to avoid problems with possibly swapped L1/N on AC in?
Best Regards

Hartmut


Multiplus-II
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
Justin Cook avatar image
Justin Cook answered ·

As long as your own wiring is correct, I doubt you'll ever need to worry about the pedestal wiring being swapped - N & G are bonded at the source transformer, so anyone who tried to wire a pedestal backward and swap L & N would very quickly learn their mistake.

1 comment
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

derrick thomas avatar image derrick thomas commented ·
Not as impossible as you might think. I've seen it happen in RV parks. Really easy to switch line and neutral when wiring an outlet for a non proffesional. The best defense is a EMS.
1 Like 1 ·
info-6 avatar image
info-6 answered ·

Hi again,
OK, I did it...

I set Dynamic ESS of "Off"-mode

I switched of the Multiplus II and then swapped L1 and Neutral

I switched on the Multi and got the error 11

bildschirmfoto-vom-2023-08-26-18-20-43.png

bildschirmfoto-vom-2023-08-26-18-22-12.png

At least I can be sure now that it simply doesn't accept, if a wiring in an RV park is incorrect.

I might helps others ;-)


bildschirmfoto-vom-2023-08-26-18-20-43.png (35.7 KiB)
bildschirmfoto-vom-2023-08-26-18-22-12.png (34.3 KiB)
4 comments
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

geomz avatar image geomz commented ·

While that is good testing for general knowledge, I would still highly recommend installing an inline surge protector/EMS. Cheap insurance for something that can cause quite serious damage to your more expensive equipment. An EMS would protect you from additional SANFUs besides a reversed line wire.


I’ve been to lots of RV parks over the years and I’ve seen some seriously janky wiring, even at “fancy new” looking pedestals. :)

0 Likes 0 ·
Show more comments
Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·
Using ESS in a RV it's not allowed!

ESS is only for stationary systems.

0 Likes 0 ·
Show more comments