Sujet : Re: British (european?) kitchen counter electric outlets
De : liz (at) *nospam* poppyrecords.invalid.invalid (Liz Tuddenham)
Groupes : sci.electronics.designDate : 19. Jun 2024, 23:56:30
Autres entêtes
Organisation : Poppy Records
Message-ID : <1qvf8sw.1bvkz7uvaas1sN%liz@poppyrecords.invalid.invalid>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14
User-Agent : MacSOUP/2.4.6
Martin Brown <'''newspam'''@nonad.co.uk> wrote:
[...]
Shorts caused by drilling or nailing into a mains cable can and do
happen here too. At worst it should blow a fuse and at best take down a
circuit breaker for unbalanced live neutral.
Even worse is a neutral-earth fault. It may not operate the trip at
first if the voltage between neutral and earth is very low at the time.
Later, when the local load increases, the trip operates for no obvious
reason.
This has a habit of happening at the most inconvenient times, such as
just before Sunday lunch when everyone puts their cookers on, or during
the night when storage heaters switch in. Because all the neutrals are
solidly connected to a bus bar in the consumer unit, isolating the cause
of the fault can be a tedious job
-- ~ Liz Tuddenham ~(Remove the ".invalid"s and add ".co.uk" to reply)www.poppyrecords.co.uk