old mem consumer unit, help plezzzzzz

[m25maintenance]

guys im replacing an electric shower like for like, the old shower was 9.5 kw, but was only on a 32 a mem type 1 321 qeb mcb, i told cliant it should be protected by a 40 amp breaker, trouble is the board is oldish and i dont know what breaker to fit,,,, also no rcd protection on boaed, are there any mem rcbo that will fit that board,tanx

 

[shay.sparky]

it will be better for a mains replacment mate by the time you find a rcbo if ya lucky
i would replace just for my own peice of mind to be fair mate

 

[davelerave]

is that ok the 9.5 on the 40amp?

 

[saveloy]

What size CSA is the cable to the shower?

 

[Jason Smith]

if you leave the 32 amp, thats more safety than a 40 amp, unless thay have the shower on full heat, its not going to use all the amps anyway !

 

[davelerave]

design currrent <breaker< cable(inc. derating)


32amp mcb will trip over time

 

[m25maintenance]

jason smith so u saying that i tell the lady o its safe as long as you dont use it on full power, saveloy its 6mm so can carry 56a if clipped direct so ok

 

[pennywise]

Is it a memra 2000 board?

 

[m25maintenance]

guys the old shower burned at connections, surly 32a was too low

 

[m25maintenance]

Is it a memra 2000 board?

yes mate , thanks

 

[davelerave]

guys the old shower burned at connections, surly 32a was too low

you mean the input on the shower -that isn't related to the protective device obviously

but yes 32 is too low,prob should be 45

 

[pennywise]

M8 memshield 2 breakers fit them you can still get them RCBOs will cost you around 50 for the eaton breaker and the rcbo unit which attaches to the top

 

[m25maintenance]

the breaker that was serving the shower was a mem m 6 type 1 321 QEB

 

[pennywise]

If the board is a mem memra 2000. Eaton memshield 2 breakers will fit and the RCBO units that are sold seperately

 

[Hawk81]

guys the old shower burned at connections, surly 32a was too low

it probably burned the connections due to them not being tight enough. Nothing to do with it being to small a fuse. If anything a 32amp fuse would stop the 6mm overheating and burning better than a 40amp would.