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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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MCB types..
Hi,
I'm wanting to replace an (unused) 45A MCB with a new 6A one for a new circuit.. Are there different sorts of MCBs? And what are they. (Just talking standard domestic installation here) My current 'guess' is that there's: 1) Two sorts - mini ones that fit into something looking like an old- style fuse holder, and 'ordinary' ones. 2) Various current ratings, obviously. 3) Various switching curves. 'Type A,B,C' etc. I want type B for a 'normal' house fuse? (What do the curves mean?) Anything else? Are they all the same overall size, or do I need to buy one that matches the consumer unit. |
#2
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AJB wrote:
Hi, I'm wanting to replace an (unused) 45A MCB with a new 6A one for a new circuit.. Type B are the usual for domestic, but if its for lighting, type C is much better, dosent nuisance trip the way Bs sometimes do. NT |
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