I have one spare way on a MEM Memera 3 CU fitted with cartridge fuses (circa 1990) that I want to use to feed an MCB/RCD shower unit. My local electrical wholesaler sold me a 40A MCB (Eaton ALB401) but it doesn't fit. What I need is either a 40A fuse carrier and fuse or a 40A plug-in MCB. The blades on a Wylex plug-in MCB are the wrong orientation (90 degrees out) and are the wrong spacing anyway. Can anyone help please?
MEM Memera 3 CU
- Thread starter Stuthehandyman
- Start date
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You see them on EBay from time to time, sometimes an old CU with a set of fuseholders. You will have to be able to recognise them as the ebay advert description may be inaccurate. Look at this example http://cgi.ebay.co.uk/MEM-MEMERA-45...ryZ92078QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
There is also a company that specialised in fuse parts, I'll see if I can find their URL.
There is also a company that specialised in fuse parts, I'll see if I can find their URL.
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http://www.thefusecompany.com/advan...memera+3&sid=6adb91de1986d30cf16ec6284bbb2fde
Any good?
However, if you want to fit a shower, are you sure the CU etc will take it?
Is the CU rated at 100A?
Any good?
However, if you want to fit a shower, are you sure the CU etc will take it?
Is the CU rated at 100A?
the best bet if you don't want a full CU replacement is probablly to hely the tails for the shower CU but this isn't something i'd normally reccomend to diyers.
The reasoning is as follows
1: its very high current connections which must be got just right.
2: there is the issue of isolation, doing it live is certainly not reccomended. Pulling the fuse yourself is illegal tampering (though usually a blind eye is turned in practice) and getting the REC out to isolate can often cause issues with their certification demand.
The reasoning is as follows
1: its very high current connections which must be got just right.
2: there is the issue of isolation, doing it live is certainly not reccomended. Pulling the fuse yourself is illegal tampering (though usually a blind eye is turned in practice) and getting the REC out to isolate can often cause issues with their certification demand.
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Sorry, I forgot to thank everyone for all their help.
I found that one of the ways on the CU actually has a re-wirable fuse holder and I was going to move it to the spare way at the end of the CU to feed the new shower RCD/MCB unit and buy a replacement 30A cartridge fuse holder for the existing circuit. However, the CU is only rated at 80A and all-in-all it was getting a bit messy. So the customer is having a brand new replacement split load CU fitted (so I won't need my shower RCD/MCB unit) and the whole installation will be tons better as all the sockets and the existing shower will now also be RCD protected.
Thanks once again.
I found that one of the ways on the CU actually has a re-wirable fuse holder and I was going to move it to the spare way at the end of the CU to feed the new shower RCD/MCB unit and buy a replacement 30A cartridge fuse holder for the existing circuit. However, the CU is only rated at 80A and all-in-all it was getting a bit messy. So the customer is having a brand new replacement split load CU fitted (so I won't need my shower RCD/MCB unit) and the whole installation will be tons better as all the sockets and the existing shower will now also be RCD protected.
Thanks once again.
Don't forget to stick the old MEM board on eBay 
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