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16A on Ring

RustyH
Evening all,


I have a client who is looking for their swimming pool heat pump to be wired up. Manual requests for a 16A connection (although client has been running off a 13a plug!!).

The layout of the house and garden restricts the direct connection to the CU to being long and messy. 


The most direct route is to the lower socket ring. Im sure I remember reading on the old forum that a 16a RCD can be classed as a FCU. 

I can not seem to find reference to this in the regs though, is it stated in there?


If it is acceptable I could spur off this lower ring, in to a weatherproof CU with a double pole 16A RCD, then run SWA up the garden to the heat pump. 


Cheers

Rusty

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  • 0
    A heat pump in a rack is not really a water heater in the normal hot resistance sense though, more of a fridge mechanism with attitude. I also suspect it was not quite what was in the minds of the authors of the OSG, who I think really meant 'only diddly little 1kW handwashers are OK spurred from  a ring anything else needs it's own cable ' but embroiled themselves in the standard writers English, and somehow failed to say so.

    The stored water volume is only really relevant in the sense of how long the element  will be on for when first switched on and cold, a regualtion that made some nod to the element rating might have been better. If you really want to worry about average load and diversity, then the water consumption is more relevant. Some of those diddly hand wash heaters manage nearly 100% utilization in busy works wash rooms and similar at certain times of day.
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  • 0
    A heat pump in a rack is not really a water heater in the normal hot resistance sense though, more of a fridge mechanism with attitude. I also suspect it was not quite what was in the minds of the authors of the OSG, who I think really meant 'only diddly little 1kW handwashers are OK spurred from  a ring anything else needs it's own cable ' but embroiled themselves in the standard writers English, and somehow failed to say so.

    The stored water volume is only really relevant in the sense of how long the element  will be on for when first switched on and cold, a regualtion that made some nod to the element rating might have been better. If you really want to worry about average load and diversity, then the water consumption is more relevant. Some of those diddly hand wash heaters manage nearly 100% utilization in busy works wash rooms and similar at certain times of day.
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