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Where batteries should and shouldn’t be installed
where batteries should and shouldn’t be installed
For anyone who was unconvinced about where batteries should and shouldn’t be installed, this document clarifies it.
Insurance companies and possibly mortgage companies will know pay attention to this.
eca.co.uk
IET & BSI publish Amendment 4 (2026) to BS 7671:2018 (IET Wiring Regulations)
The latest industry news in the electrotechnical sector.
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14 Replies
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Is there a link to the actual document, rather than the press release?
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it’s not printed yet, and you’ll have to buy the book, home owners can ask their local council buildings inspector to confirm bit ussualy for free, but the IET wants to keep you paying into their trust fund.
Top tip tho, if your sparky is any good, they will almost always have a copy of the book in the van, or the on site guide. If it’s blue they have missed two ammendments now, if it’s brown there one amendment short now. If they’ve got an orange one before April their part of the IET consultation
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the full document is available 15th April i believe
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It be helpful just to post the locations, I am going to have a guess, loft no, under stairs no. In the house not preferred, garage or outside is the preferred option.
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it reinforces PAS63100 and writes it into the Regs. I can post the PAS document if that would help.
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Drafts are here, obviously to be taken as is rather than final.
https://standardsdevelopment.bsigroup.com/proj…/9024-10764
standardsdevelopment.bsigroup.com
British Standards Institution - Project
British Standards Institution - Project
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“This document clarifies where IET state where they currently believe batteries should and should not be placed”. – Subject to change, using legislation initiated to standardise wiring now overreaching to locations of electricity storage devices.
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Ours is in the lounge in an alcove under a glass shelf We have solax batteries and they look like radiators so not out of place. Our garage had been converted into a kitchen and didn’t want them outside so there was the best solution for us.
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Probably about time from a common sense perspective, I don’t know if there have been any fires in lofts but my own loft easily gets well above 40C so it can’t be ideal.
A lot of people probably forget that most battery capacities as stated on data sheets are rated and tested at 25C which is comfortably warm, just not phew, loft levels of warm!
I do wonder though as a result of the revision to BS7671 will insurance companies now refuse to cover batteries in Lofts or are they doing that already?
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Can batteries go in the garage if it’s a garage that is integrated in the house? Would it be better to put them on the outside of the house? TIA
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no, it’s not recommended. Detached garages are fine or outdoors.
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It’s good that there’s now some clarity for installers but I think all the comments and reference that residential insurers may take a view to not cover existing installations isn’t helpful and will cause considerable anxiety for many homeowners. The regulations aren’t retrospective and I’d be astonished if insurers start excluding cover on existing installations (e.g. in lofts). They have never taken this approach with any other updated electrical regulations, and there are hundreds of thousands of homes with electrical installations not to current standards.
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Basically trying to push everyone to installing outside rather than inside, mainly due to fire safety
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PAS63100 is guidance, ammendment 4 of BS7671 is not.
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