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I originally had an Air-Stream fan, but it was not a timed model so I returned it. The instructions requested the use of a 3A fuse and a double pole switch. No mention of an RCD. The fan I now have, the Dimpco/Xpelair, requests the use of a 5 amp fuse and multi-pole switch. (Is a 5 amp fuse not...

.... I forgot to add that the 230v fan is going to be mounted in Zone 2. I'm guessing that the UK uses a similar zoning system to Ireland., where zone 1 is the bathtub/shower area.

Yeah, allowing for the bonding of accessories to be omitted is understandable if the bathroom has RCD protection. Coming back to my point about two RCDs ending up in a "race condition" during an earth leakage event..... Do you think there's any truth in the trip time being increased if two...

Thanks Doc, I didn't realise so many homes were still unprotected regarding RCDs. I suppose there are still a lot of older houses yet to be re-wired. The garden and outdoor supplies are more exposed to physical cable damage, but within the house I think you are more likely to get a nastier...

+++++++++++++++++++++++++++++++++++++++++++++++++++ Originally added to old discussion; http://talk.electricianforum.co.uk/topic/17562-rcds-in-series/ Split off as new question due to age and length of old thread. Doc H. +++++++++++++++++++++++++++++++++++++++++++++++++++ Hi all. Just...