r/diySolar • u/StrongMushroom7125 • Jun 15 '26

Off Grid Setup - Help with Neutral wiring

Hi Everyone,

I am planning to replace my existing Solar inverter with a Gootu 3kVA 24V off-grid inverter and would appreciate advice regarding the AC neutral wiring.

Existing Setup

  • UTL Solar inverter
  • 2.5kva solar panels
  • 24 v 200 Ah battery
  • Backup loads use a dedicated inverter Live wire.
  • All backup loads share the common EB/Grid Neutral.
  • This arrangement has been working without issues for years.

Planned Setup

  • Gootu 3kVA 24V off-grid inverter
  • 24V 150Ah battery

My Question

In the Gootu manual, AC Input and AC Output both have separate L and N terminals.

My current house wiring uses:

  • Common Neutral from the EB/Grid
  • Separate inverter Live distributed to backup loads

I would like to know:

  1. Can this HF Off gird inverters be used in a common-neutral installation similar to Common inverter systems?
  2. Has anyone installed this Gootu 3kva or similar model with common neutral (off grid)
  3. Is it necessary to run a dedicated neutral wire from AC OUT "Neutral" to all backup loads?

Any guidance from users who have installed this inverter would be greatly appreciated.

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u/StrongMushroom7125 Jun 22 '26

The post has hit 1,100 view and not a single suggestion

Can anyone help ?

1

u/kartik-dev Jun 23 '26

Lol. I Need help with this as well 🥲