We still have a fusewire CU - nowt wrong with it, so reluctanct to pay £££'s just to make it a MCB CU - anyway, would a leccy be happy installing a seperate 45A RCD for upgrading the shower from 7.5Kw up to 9.5Kw onto the existing CU, or will they insist on changing the CU? If so, how much should I be looking at (currently its a 6 way fusewire 2x5A lights, 30A cooker, 30A ring main, 30A shower, 15A immersion, on a 80A CU)
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- Thread starter bufferz
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That is so not true....
Works fine, never had any probs with it, what's so wrong with a fusewire CU? (Dont mean it to sound as arsey as it does
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How do you know it won't take a 40A ?
Because they just don't.
Works fine, never had any probs with it, what's so wrong with a fusewire CU? (Dont mean it to sound as arsey as it does
MCBs are much more sensitive, so will trip at smaller faults that would either take much longer for an fuse to blow, or might not blow it at all. A fusewire CU also implies there are no RCDs (I assume your current shower has a separate RCD unit?), which means unless you use RCD'd sockets or plugs, you don't have RCD protection when doing anything that should have it (e.g. mowing the lawn etc).
Plus, if it's a fusewire CU it probably means things haven't been looked at for a while, so you never know what else might be not up to current standards (yes, I know this doesn't necessarily mean it's unsafe, but still...)
yes, shower is on RCD, all outside work, ie lawn mowing, etc - use 13A socket plug RCD
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