Правильный НОЛЬ в розетке после инвертора. Чтоб работал газовый котел и прочее...

Key technological issue

• After an inverter is connected, the neutral (0V) behavior in the outlet can be incorrect. In particular, when the inverter runs without city (mains) power, the “neutral” may appear as one of two phases.
• The author’s goal is to make the gas boiler and other equipment work correctly by ensuring a proper neutral reference when switching between inverter power and mains under unstable grid conditions.

Proposed solution / circuit feature

Because the inverter does not switch/produce a correct neutral the way a three-phase inverter might, the author builds an external switching scheme using a contactor.

Contactor and switching logic

The contactor includes:

• Normally open contacts (e.g., “R3, R4”)
• Normally closed contacts

In the normal state (contactor not energized), the author reports measurements showing:

• Continuity/closed state between the contact and the “first terminal”

When mains power control logic is applied, the contactor changes state, allowing the inverter output neutral to be connected/disconnected appropriately.

How it works in practice (test / verification)

The author verifies behavior by checking outlet indicators and measuring continuity/voltage:

• When mains power appears:

  • The contactor remains in its normal (or specified) state.
  • The inverter neutral is not connected as a ground/neutral reference (because mains provides the correct neutral).
  • Outlet LED behavior changes accordingly.

• When mains disappears:

  • The contactor activates (switches).
  • The author’s inverter neutral becomes tied to ground/earthing (i.e., the “zero” of the inverter sits on the ground).
  • This makes the “neutral” in the outlet behave as expected (neutral becomes working).

Observed effects / analysis

During switching and/or unstable neutral conditions:

• Some LED lamps/spotlights show abnormal behavior—appearing like reduced power / under-voltage due to the incorrect “two phases” present in the socket.
• The author notes lamps may look like they operate at “minimum,” or appear off / half-lit, consistent with a wrong voltage/neutral reference.

Review / guide / tutorial angle

This is presented as a DIY guide to correct inverter-neutral problems using:

• A contactor (DIN-rail mounted)
• A described wiring and switching test procedure, including:
  • checking indicator lighting
  • observing the switching moments

The author references prior video feedback and explains that they implemented their own neutral strategy due to uncertain grid stability.

Main speaker / sources

• Primary source: the video author (speaking first-person; references “in the last video…” and comments from viewers).
• External references: viewer comments mentioned in a prior video (e.g., “don’t disconnect neutral from the city”) are discussed, but the speaker implements an alternate solution based on their specific conditions.