If you are considering a fuse you may need to consider using two on both 'live' and 'neutral' with a suitable warning. This is due to 'EU' mains plug connectors being un-polarised. So the mains plug can be inserted either way around, allowing the live and neutral to the appliance to be reversed. There is also AFAIK no set convention as to whether sockets have the live wired to the left or right hole in the wall socket.
Fusing in the appliance will limit the available power in the event of a fault or disconnect the power in the event of a class I device with 'earth fault' from the 'live' side. Sounds fairly like 'must' to me regardless of what the standard says! :-) Do a documented risk assessment of the product and draw your own conclusions... Matthew Wilson Technical Director GB Electronics (UK) Ltd matthew.wil...@gbelectronics.com https://gbelectronics.uk +44 (0)1903 244 500 Ascot House//Mulberry Close//Woods Way Goring-by-Sea//West Sussex//BN12 4QY//UK Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it from your system, do not use or disclose the information in any way and notify the sender immediately. The contents of this message may contain personal views which are not the views of the company, unless specifically stated. GB Electronics (UK) Ltd is a company registered in England and Wales under number 06210991. Registered office: Ascot House Mulberry Close, Woods Way, Goring By Sea, West Sussex, BN12 4QY. From: Amund Westin <am...@westin-emission.no> Sent: 25 October 2019 13:42 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Fuse in device is mandatory or not? Consider a device connected by a plug to 230VAC by an EU plug (2 pin + ground). Must sucha device (EN60950-1) have an internal fuse? Or can it rely on fuses which is a part of the house installation? BR Amed - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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