# Earth from multi ups side to grid-earth? **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** domestic, multiplus, diy\ **Created:** [16 December 2024 17:24 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625 "2024-12-16T17:24:31Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Pieter](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Pieter](https://community.victronenergy.com/u/Pieter)\ **Post date:** [16 December 2024 17:24 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625/1 "2024-12-16T17:24:31Z")
I am uncertain about something. I have my whole house connected to the multiplus I have connected the earth of the multiplus (ups side and grid side) to the earth of the grid is this correct? So the earth of the grid is directly connected to the earth of the multi. Only the multiplus is connected to the grid. Is there a potential problem? And it so, how to connect is otherwise? Thanks. ---
**Author:** ![cmock](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@cmock](https://community.victronenergy.com/u/cmock)\ **Post date:** [16 December 2024 17:45 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625/2 "2024-12-16T17:45:55Z")
In 99% of the cases, you’re fine – you should have a common earthing busbar somewhere in your system connected to “real” earth (spike in the ground or somesuch), and if you connect any of the PE terminals of the multi to that, it should do the right thing (bridge earth and neutral via a relais when the grid is disconnected). However, earthing systems are a complicated topic, and we can’t know if the system in your place is incompatible with what I said above. And it is a crucial safety issue, so better talk to a local electrician. ---
**Author:** ![Pieter](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Pieter](https://community.victronenergy.com/u/Pieter)\ **Post date:** [16 December 2024 18:47 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625/3 "2024-12-16T18:47:12Z")
Thank you very much for your fast reaction. The house wires here are completely wired conform the dutch speciations. I thought i did a good job connecting everything, but i read some things on a forum that made me doubt. The way i have wired it now should make sure there is only one earth-point. Thats the one point that is the official earth. Should keep earth loops away. The multi has its standard setting for the earth relay, so when i go to islanding when the grid fails i should be ok. Someone just said that when the grid goos down you can not have local ups still connect to the earth grid and should connect to its own ground rod. But i can find nothing like that in the code. But i must admit that i have not read the complete code 🙂 I thank you for your advice. ---
**Author:** ![DuivertNL](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/duivertnl/32/279_2.png) [@DuivertNL](https://community.victronenergy.com/u/DuivertNL)\ **Post date:** [16 December 2024 20:55 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625/4 "2024-12-16T20:55:56Z")
I have done it the same way, central grid earth is connected to everything before and after multiplus setup for dutch systems this is ok, other country’s may have other regulations ---
**Author:** ![Pieter](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Pieter](https://community.victronenergy.com/u/Pieter)\ **Post date:** [18 December 2024 20:29 UTC](https://community.victronenergy.com/t/earth-from-multi-ups-side-to-grid-earth/15625/5 "2024-12-18T20:29:38Z")
Ok, thanks. Makes me little more sure of myself 😉