I wonder if any of you guys would have any idea of the electrical demand for the pumps for a water mist sprinkler system? Five floors, with the ceiling of the top floor being about 25m above the tank in the basement. Each storey is around 400m2. I know that it is a bit of a daft question but we are on our limit with maximum demand and will probably have to put the pumps on a priority arrangement. I just want to get a heads up An inkling would do.
My neighbour has a water mist system in his house. The same firm that installed it does an annual service. After 3 or four years of servicing the firm failed the system because the MCB of the pump circuit was a B-type and it needed to be C-type. So if it needed to work at any time prior to this, it probably wouldn't have.
Typically the domestic systems are basically a pressure washer in the cupboard under the sink connected to a spray head under the kitchen tap and/ or connected to a wall outlet with some Aico heat alarms to trigger it. They can also be connected to a tank of water stood in a hallway or similar with a decorative cover over them.
Like any sprinkler they should only wet the area they are installed in and where there is a fire, they are a lot less destructive than a sprinkler system and if they are supplied from a tank there is not an infinite supply of water, so are time limited. I would expect the system to be zoned may be with multiple pumps.
I installed the cables and supply for a domestic version that is in a TT system and had to install a RCD, there's a discussion about it on the old forum. Before I installed it I ended up having discussions with a couple of consumer unit manufacturers about RCD and MCB protective devices as you don't want those devices disconnecting the pump prematurely.
One of the commercial gas versions killed a guy in South Wales stealing scrap metal.
My neighbour has a water mist system in his house. The same firm that installed it does an annual service. After 3 or four years of servicing the firm failed the system because the MCB of the pump circuit was a B-type and it needed to be C-type. So if it needed to work at any time prior to this, it probably wouldn't have.
Typically the domestic systems are basically a pressure washer in the cupboard under the sink connected to a spray head under the kitchen tap and/ or connected to a wall outlet with some Aico heat alarms to trigger it. They can also be connected to a tank of water stood in a hallway or similar with a decorative cover over them.
Like any sprinkler they should only wet the area they are installed in and where there is a fire, they are a lot less destructive than a sprinkler system and if they are supplied from a tank there is not an infinite supply of water, so are time limited. I would expect the system to be zoned may be with multiple pumps.
I installed the cables and supply for a domestic version that is in a TT system and had to install a RCD, there's a discussion about it on the old forum. Before I installed it I ended up having discussions with a couple of consumer unit manufacturers about RCD and MCB protective devices as you don't want those devices disconnecting the pump prematurely.
One of the commercial gas versions killed a guy in South Wales stealing scrap metal.
