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Residential Sprinkler Pump Protection
Former Community Member
The British Standard for domestic sprinklers stipulates where a pump is required to boost the water pressure circuit breakers are not to be used for protection. On commercial installations we would have previously used a lockable red enclosure with main switch and MCB. Does anyone have any ideas on suitable solutions for the domestic sprinkler scenarios using a cartridge fuse or similar?
Fuses are very, very, reliable. MCBs are just very reliable - and in principle an MCB might have had a full current trip event in the past, and be in some way weakened, and you cannot tell from outside.
Generally the idea here is that the pumps are certain to keep turning right to the last possible moment. - if required that includes while the burning building pretty falls down around them.
Mike.
PS
DIN rail fuses are common enough - we just need UK CU manufacturers to be a bit less restrictive about stuff made by others in their enclosures magically making it unsafe.
On the continent Neozed and Diazed bottle fuse holders are often seen as part of a domestic DIN rail fuseboard - sometimes as the main incoming let-through energy limiting element.
Fuses are very, very, reliable. MCBs are just very reliable - and in principle an MCB might have had a full current trip event in the past, and be in some way weakened, and you cannot tell from outside.
Generally the idea here is that the pumps are certain to keep turning right to the last possible moment. - if required that includes while the burning building pretty falls down around them.
Mike.
PS
DIN rail fuses are common enough - we just need UK CU manufacturers to be a bit less restrictive about stuff made by others in their enclosures magically making it unsafe.
On the continent Neozed and Diazed bottle fuse holders are often seen as part of a domestic DIN rail fuseboard - sometimes as the main incoming let-through energy limiting element.
