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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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Fuse board breaker
I have a 30A breaker on an old style fuse board dedicated to the
electric shower. I want to upgrade this to 45A. Will i need to buy a new 45A breaker or will it just be a case of replacing the 30A fuse wire inside the breaker with 45A wire? |
#2
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Fuse board breaker
You either have old-fashioned rewirable fuses, or you have miniature
circuit breakers - MCB's. There's no such thing (or shouldn't be) as a breaker with fuse wire inside. (Though there are fuseholders with cartridge fuses inside). Either way, a rewirable fuse should not be rewired with higher amperage wire than it is rated for. A MCB can only be replaced. On top of that the holder a rewirable fuse plugs into is sized for a particular rating of rewirable fuse - or for the same rating of replacement MCB. The rated fuse (or trip) value should only be increased if the rating of the fixed wiring is appropriate - I'd be concerned somone asking questions about the "fuse wire inside the breaker" isn't someone that should really be messing with this. |
#3
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Fuse board breaker
Barnsey wrote:
I have a 30A breaker on an old style fuse board dedicated to the electric shower. I want to upgrade this to 45A. Will i need to buy a new 45A breaker or will it just be a case of replacing the 30A fuse wire inside the breaker with 45A wire? think you need to figure out which youve got first, fuse wire, breaker, or catrridge fuse. NT |
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