S
sizz1806
Hi. First time poster here so please go easy on me.
A customer of mine has had a summer house built at the rear of her garden which has been supplied with two 6Kw heaters! Yep, 12Kw!! She would also like 2 switched double sockets and about 4 LED spots installed. Now the problem, as if a 12Kw load isn't enough, is that the summer house will be on the end of roughly a 65m run from a switch fuse inside the house. The obvious problem is volt drop and whether enough diversity can be applied to make this install possible. As a note, the heaters very basic instructions state that they DO each need a 26A supply.
Should I even apply diversity to the heaters knowing full well that the customer is intending to use them to full capacity? The customer explained that they would like to eat Christmas dinner in the summer house. This set the obvious alarm bells ringing - heaters on, cooker on, kettle on, hair dryers on....Boom....darkness.
At 52A I can get away with 16mm SWA if I have calculated correctly. But chuck in 10A + 50% of a power circuit and 66% of a lighting circuit and I think it all begins to fall apart. I have tried talking her into more efficient heating methods but she remains hell bent on what she already has. Surely other people have bought these summer houses and heaters. And at £20k a pop I'm thinking a fair few of them will be at the end of big gardens! Surely not all of these people can be on 3 phase supplies?
Any advice, even if it's 'say no to the customer' greatly appreciated.
A customer of mine has had a summer house built at the rear of her garden which has been supplied with two 6Kw heaters! Yep, 12Kw!! She would also like 2 switched double sockets and about 4 LED spots installed. Now the problem, as if a 12Kw load isn't enough, is that the summer house will be on the end of roughly a 65m run from a switch fuse inside the house. The obvious problem is volt drop and whether enough diversity can be applied to make this install possible. As a note, the heaters very basic instructions state that they DO each need a 26A supply.
Should I even apply diversity to the heaters knowing full well that the customer is intending to use them to full capacity? The customer explained that they would like to eat Christmas dinner in the summer house. This set the obvious alarm bells ringing - heaters on, cooker on, kettle on, hair dryers on....Boom....darkness.
At 52A I can get away with 16mm SWA if I have calculated correctly. But chuck in 10A + 50% of a power circuit and 66% of a lighting circuit and I think it all begins to fall apart. I have tried talking her into more efficient heating methods but she remains hell bent on what she already has. Surely other people have bought these summer houses and heaters. And at £20k a pop I'm thinking a fair few of them will be at the end of big gardens! Surely not all of these people can be on 3 phase supplies?
Any advice, even if it's 'say no to the customer' greatly appreciated.
