GivEnergy Gateway earthing in a power cut: what has to happen, and what changed

An All-in-One with a Giv-Gateway, and something trips when the grid goes or comes back

This page is about the Gen 1 All-in-One paired with the original Giv-Gateway for whole-house backup, installed from 2023 onward. It is not about the hybrid inverters’ EPS terminals, which GivEnergy documented differently and which have their own page, and not about the 2025 All-in-One 2 and its Gateway 2.

All three have been reported by owners on GivEnergy’s own forum, on SpeakEV and on Trustpilot between March 2024 and August 2026, and they have more than one cause: a missing earth rod, a loose neutral busbar and a faulty comms cable are all on the record alongside the two faults this page is about. A plug-in socket tester will not sort them out; Electrical Safety First is explicit that those cannot confirm the earthing is adequate. The tests that do are described at the end.

What a whole-house backup must do with neutral and earth

On a normal UK supply your neutral is tied to earth by the network: at the substation and, on most homes, where the supply enters the house. While you are connected, your home must not add a second tie, or neutral current finds its way onto earth conductors and RCDs trip. When the grid fails and a gateway islands the house, it has to cut both line and neutral, and at that instant the network’s reference is gone. So, unless it is run as an unreferenced (IT) system within the limits MIS 3012 sets out below, the backup system has to make a reference of its own, at one point only, to an earth that includes a local electrode, and remove it just before the grid reconnects (G99; the IET Code of Practice; MIS 3012 for MCS-certified installers).

None of this was new when the Giv-Gateway launched in 2023. Since 2003 the law in Great Britain (ESQCR 2002, regulation 21) has required a home installation running from a switched alternative supply to comply with BS 7671. BS 7671:2008 already required RCD protection to stay effective “for every intended combination of sources of supply” (Reg 551.4.2), and island-mode protection not to rely on the network’s earthed point (Reg 551.4.3.2.1). G99, the network operators’ connection standard the All-in-One is registered under, already said a module that can run on its own “shall include an earthing system which does not rely upon the DNO’s earthing terminal”. The switched N-E bond relay itself is set out in the IET Code of Practice (guidance, December 2020) and in MIS 3012 (for MCS-certified installers, November 2021). And in June 2023 GivEnergy’s own EPS guide for its hybrid inverters told installers to meet “BS7671 and the IET Electrical Energy Storage Systems (2nd Edition)”. No statute uses the words “N-E bond relay”. Here is each document, in date order.

What is true on the other side, and we say so. No Act or regulation uses the words “N-E bond relay”, and none says a product must contain one. The legal duty falls on whoever operates the installation, not on the maker of one box; G99 itself says its provisions do not generally apply to switched-alternative-only operation, and puts earthing in that mode on “the Generator”. The switched N-E bond relay appears in only two of these documents: the IET Code of Practice, which is guidance, and MIS 3012, which binds only MCS-certified installers. That MCS standard also allowed an unreferenced island in limited cases. G98 is silent because islanded installations are outside its scope. And the law names the 2008 edition of BS 7671, not the later ones.

One step in this is engineering rather than text. An RCD can only detect an earth fault if it sits on the load side of the neutral-earth reference. So a home that relies on RCDs cannot keep them effective, as Reg 551.4.2 requires, on an island that has no reference. That step is our reading, not a quoted rule.

The IET’s July 2026 guidance, written after the product launched, puts the physics plainly: “For the RCD to detect a residual current under fault conditions, it must be installed at the load side of the point of system referencing.” It adds that it is important that “no more than one system referencing point exists, at any point in time”, partly to “prevent unwanted operation of residual current devices (RCDs)”.

Other manufacturers say so in their manuals. Tesla’s UK Backup Gateway manual: “To meet UK regulations, the Neutral must be disconnected in off-grid operation… With the Switched Earth (N-PE) Jumper installed, the Backup Gateway’s internal [contactor] will re-bond Neutral to Earth locally when the Line and Neutral contacts are open.” Victron: “the neutral conductor of the AC output is grounded to the chassis when the AC input relays are open.” GivEnergy’s own June 2023 guide for its hybrid inverters, quoted above, says the inverter makes the bond itself. None of the UK All-in-One manuals we found says where the neutral-earth link is made.

Eleven months before a UK All-in-One manual addressed the neutral in island mode, then a page that appeared in May 2024

We read every edition of the UK All-in-One + Giv-Gateway installation manual we could find, from distributor copies, GivEnergy’s own knowledge base and the Wayback Machine.

Around the same weeks, other things happened on GivEnergy’s side of the record. On 8 April 2024 its All-in-One firmware log records build A611-D611: “Optimise N-PE Logic” (the firmware log date). On 9 April 2024, answering an installer’s question about a solar-meter feature, a GivEnergy staff account added: “The V2 Gateway has better RCD nuisance tripping resilience” [spelling corrected]. Separately, on 30 May 2024 the Gateway stopped being a mandatory part of an All-in-One sale.

Nothing in the Giv-Gateway firmware notes we have read, from the first in April 2023 to the last in November 2025, mentions neutral, earth or a bond; the 2025 notes we have seen only in search results. A search result shows the note dated 29 April 2025 as: “Optimise G99 standard for relay reconnection to grid”. As of October 2026, GivEnergy’s legacy knowledge base still linked the 5 April 2024 edition of the manual (its security certificate had expired when we checked on 24 October 2026).

The evidence puts the link in the All-in-One, as a setting

GivEnergy never said this in prose, but its own documents point to it. GivEnergy’s Modbus protocol document (October 2024) and app, as published in a third-party open-source register map, name an inverter register “N-PE relay control”, an “Enable N-PE Relay” setting and a Gateway-side “GW_N-PE_Setting”. The Gateway switches line and neutral, never earth: GivEnergy’s manual has said since May 2024 that “The Earth is maintained at all times”. The evidence points to the neutral-earth relay being inside the All-in-One, and a Gateway-side N-PE setting suggests the Gateway tells it when to close. We have found no GivEnergy statement of either.

Here is what was reported. In March 2024 an owner whose consumer-unit RCD tripped only when the system was forced off-grid passed on advice from an electrician who had published a video on the AIO’s island earthing that week (not his own installer): that the AIO’s neutral-earth bond is “not activated by default”. On 11 April 2024 a SpeakEV member suggested that about 120 V between neutral and earth, on a system forced off-grid, meant its neutral-earth bond relay was not working. That is a forum post, and it does not say how the writer knew. A reading of roughly half mains between neutral and earth is what a floating, unreferenced output would show; a contributor on the IET’s EngX forum read the same measurement that way on another product in 2022. Around the same days came the firmware log entry (8 April); the manual page followed on 2 May. We have found nothing from GivEnergy saying whether either was a response to these reports.

Three things the record does not support, so this page does not say them. There was no recall: when we checked on 24 October 2026 the OPSS database had no GivEnergy entry, the MCS website had no notice, and the administrator’s published statement (12 May 2026) and proposals (filed 18 May 2026) say nothing about defects. There was no announced replacement scheme: what exists is a handful of individually reported warranty replacements, remote setting changes and firmware. And we found no source for the claim that early systems were referenced to a “centre point of the battery”; the half-mains readings people reported are what an unreferenced output would show.

Why one house trips at the switch-over and the next one does not

Every home carries some standing earth leakage: filters in appliances, a few milliamps per computer, more per length of cable and per heating element. BS 7671 recommends that standing leakage downstream of an RCD stays under 30% of its rating, 9 mA on a 30 mA device (Reg 531.3.2), because a 30 mA RCD may trip anywhere between 15 and 30 mA, and the IET says a typical one trips at 18 to 23 mA. A house with 10 mA of standing leakage on one device has perhaps 12 mA of headroom left.

Now add the switching event. When the grid relay or the neutral-earth link switches with the house live, the installation’s capacitance to earth passes a brief current; GivEnergy itself describes a “momentary imbalance” as the grid reference is lost. The IET lists double-pole switching, which is what the Gateway’s line-and-neutral relay does, as “known to trip an RCD when switching off or on due to capacitive effects”, and ABB, whose devices GivEnergy’s manual names as an example for the Gateway, lists “operational discharges” from opening and closing protective devices the same way. Where headroom is generous, nothing happens. Where it is not, the transient can tip the device over as the switch happens. That is the general mechanism, not a measurement on this product. It largely explains how the same product can trip one house every time, another now and then, and a third never, and why the fix was never one thing. Put simply, for this mechanism: little leakage, little risk; some leakage, and the small extra current as you switch can tip it over the edge. Proper diagnosis needs an on-site measurement with a peak-hold leakage tester.

It also explains why the advice owners were given went in every direction. A 100 mA device on the All-in-One feed has stopped that device tripping for some owners and not for others. GivEnergy staff said it could be fitted where the home’s circuits have their own 30 mA protection. That is the fix we recommend, provided the installation still meets BS 7671: every final circuit must keep its own 30 mA device, since devices above 30 mA cannot give the additional protection BS 7671 requires for sockets, home lighting and shallow-buried cables. A higher-rated instantaneous device upstream gives no selectivity; only a time-delayed type does. And taking an RCD out removes fault protection for whatever it alone protected. Where some circuits rely on the Gateway’s device, the remedy deals with the cause instead: measure the leakage, split circuits, cut the total by fixing leaking appliances, and choose the Gateway’s own device by design, keeping 30 mA wherever the regulations put it. The record also holds a counter-case: an owner who uprated breakers and checked earthing to no effect, and who reported in August 2026 that the problem was a loose neutral busbar connection inside the Gateway.

Island-mode verification, built on the IET’s checks

We are an independent repairer with no affiliation to GivEnergy. This is electrical testing on a live installation, so it is a visit rather than a phone call. The remote part is free and useful: the Gateway serial appears to give the build week, the portal the firmware, and, on systems that show it, GivEnergy’s app whether the N-PE setting is on; what trips and when usually points at one fault or the other.

What follows from the readings is a design decision, and it is made with numbers rather than by swapping a device and hoping: which circuits to split, whether the Gateway’s own device, which sits on the All-in-One’s connection and, on GivEnergy’s wiring layout, in island mode supplies the whole house, should be a different type, whether an appliance needs replacing, and whether the earth rod is adequate. If the N-PE setting has never been enabled on your system, enabling it is, in our view, when the second fault, if your installation is prone to it, would show, so it is done with the instruments on and not from a laptop.

What we cannot do is get you a new Gateway from GivEnergy, which entered administration on 9 April 2026, or push firmware for it. What we can do is tell you, with measurements, whether your backup is doing what the standards say it must, and put right what is in our gift. If your installer has gone too, that situation has its own page, and the wider picture is on the administration facts.