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Do-It-Yourself (DIY) Question & Answer Forum
Old M.K m.c.b ' LN5940 required'
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<blockquote data-quote="showerpower" data-source="post: 197676" data-attributes="member: 13962"><p>Hi, I am new member to the forum and have encountered the same problem as Crystaljohn. I have changed out a shower from 7.5 KW to 8.5 KW anf the CU is an old MK with a 32A type 2 mcb which noow needs changing to a 40A. At one of the local suppliers where I was trying to find an alternative make which might fit, the guy behind the counter said he had the same problem but just left the 32A mcb in place and his 8.5 KW shower continued to work without tripping the mcb!</p><p></p><p>He rsckoned it was because there is a lot of tolerance in the tripping value of the mcb. I have run the shower as he suggested and it appears to work OK. Does anybody know if this is correct or should I be having trouble sleeping at night worrying about it? If anyone has a 40A MK mcb type 2 I would be pleased tohear from them.</p></blockquote><p></p>
[QUOTE="showerpower, post: 197676, member: 13962"] Hi, I am new member to the forum and have encountered the same problem as Crystaljohn. I have changed out a shower from 7.5 KW to 8.5 KW anf the CU is an old MK with a 32A type 2 mcb which noow needs changing to a 40A. At one of the local suppliers where I was trying to find an alternative make which might fit, the guy behind the counter said he had the same problem but just left the 32A mcb in place and his 8.5 KW shower continued to work without tripping the mcb! He rsckoned it was because there is a lot of tolerance in the tripping value of the mcb. I have run the shower as he suggested and it appears to work OK. Does anybody know if this is correct or should I be having trouble sleeping at night worrying about it? If anyone has a 40A MK mcb type 2 I would be pleased tohear from them. [/QUOTE]
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Old M.K m.c.b ' LN5940 required'
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