Evening all, I wonder if you can help.
I have an old Wylex type fuse box in my house with re-wireable cartridge fuses in it, the main box has 4 Cartridge Fuses and then I have a seperate box with a 45Amp cartridge in it that runs my shower.
Today I exchanged the 45Amp re-wireable cartridge fuse for a '45Amp minitrip MCB Type B' that I bought from Wickes (I know that this can be deemed reportable). When I did it I turned the main supply back on and then flipped the MCB to ON and then turned the shower on and came back to the box and the MCB was 'Buzzing'??
The Shower is 8.5Kw the circuit runs from directly beneath the meter into the seperate fuse board (containing the one MCB I fitted) to a pull cord switch and then into the Shower. It runs on 10mm Cable.
My question is what is the Buzzing?? is their a problem that has been there a while but that did not show up previously due to it being a re-wireable fuse?? also after searching I believe that maybe a 8.5Kw shower should be on a 40Amp MCB?? is this true and would this cause the buzzing??
I have turned the shower off at the fuse and the MCB untill I get a little help
I have an old Wylex type fuse box in my house with re-wireable cartridge fuses in it, the main box has 4 Cartridge Fuses and then I have a seperate box with a 45Amp cartridge in it that runs my shower.
Today I exchanged the 45Amp re-wireable cartridge fuse for a '45Amp minitrip MCB Type B' that I bought from Wickes (I know that this can be deemed reportable). When I did it I turned the main supply back on and then flipped the MCB to ON and then turned the shower on and came back to the box and the MCB was 'Buzzing'??
The Shower is 8.5Kw the circuit runs from directly beneath the meter into the seperate fuse board (containing the one MCB I fitted) to a pull cord switch and then into the Shower. It runs on 10mm Cable.
My question is what is the Buzzing?? is their a problem that has been there a while but that did not show up previously due to it being a re-wireable fuse?? also after searching I believe that maybe a 8.5Kw shower should be on a 40Amp MCB?? is this true and would this cause the buzzing??
I have turned the shower off at the fuse and the MCB untill I get a little help