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I'm wiring a new house. It's going to be heated with an air source heat pump. I know I had to provide a feed to it, but nobody had yet given me the spec. From past experience, I was expecting probably a C25 mcb (don't know why they still specify a type C when most heat pumps are inverter driven so don't have huge start up surges any more but that's an aside)
Yesterday, the house owner says "the heat pump guys are coming tomorrow" Tough I say, it's the last week before Christmas and I'm still busy and still turning work away. but I agreed to go and at least have a look. Bloody good job I did.
This time it's a split heat pump, not a monoblock. And they told me they will be installing a small CU for the heat pump and I just need to provide a 50A (50A FFS) feed to it. No problem I will henley block off the tails for that (though I wish I had known and put the henleys in when I connected the CU)
"You can't do that"
"Why?"
"You have to provide rcd protection for our CU"
"Won't your CU have an rcd or rcbo's"
"No, you need to provide an rcd protected feed"
After initially telling them they are being silly and taking the urine, we agreed I will henley block off the tails to the new CU and I will change their main switch for an rcd. Stupid twats.
So I will be there tomorrow to do that, and I won't be letting the plumbers get in until I have done it, as looking at the layout of the room, access will be impossible once the HW tank is in.
Yesterday, the house owner says "the heat pump guys are coming tomorrow" Tough I say, it's the last week before Christmas and I'm still busy and still turning work away. but I agreed to go and at least have a look. Bloody good job I did.
This time it's a split heat pump, not a monoblock. And they told me they will be installing a small CU for the heat pump and I just need to provide a 50A (50A FFS) feed to it. No problem I will henley block off the tails for that (though I wish I had known and put the henleys in when I connected the CU)
"You can't do that"
"Why?"
"You have to provide rcd protection for our CU"
"Won't your CU have an rcd or rcbo's"
"No, you need to provide an rcd protected feed"
After initially telling them they are being silly and taking the urine, we agreed I will henley block off the tails to the new CU and I will change their main switch for an rcd. Stupid twats.
So I will be there tomorrow to do that, and I won't be letting the plumbers get in until I have done it, as looking at the layout of the room, access will be impossible once the HW tank is in.
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