Discuss Wylex NB20 type 2 rcbo replacement in the UK Electrical Forum area at ElectriciansForums.net
Pretty sure Wylex never made an rccb to fit those but I believe you could get a two module rccb made by a third party at the time but I would go down the separate rcd route.
FWIW I would talk to the customer about the pro's and con's of changing the CU ...
Reply to Wylex NB20 type 2 rcbo replacement in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.