I read in !emc-pstc that Kevin Richardson <kevin.richard...@ieee.org>
wrote (in <nebbihdflagbliikmlbkgeabdnaa.kevin.richard...@ieee.org>)
about 'Surge Protection & EN 60439-1' on Tue, 3 Dec 2002:
>Can anyone please advise if EN 60439-1 allows the practice of placing a
>surge protection device (eg an MOV) across the mains input (active to earth)
>is accepted.  
>The MOV would probably be set at something like 420 vAC or RMS so probably
>about 600 peak.

Whether it does or not, DON'T DO IT! It's now considered dangerous.
There is alleged to be an exemption for hard-wired equipment (not plug-
in) with tow separate earth paths back to the fusebox (which a British
ring-main does automatically, but not a spur), but I've not seen any
official text yet.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
Interested in professional sound reinforcement and distribution? Then go to 
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!

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