In message <ce18b7b1.1bc02%[email protected]>, dated Fri, 26 Jul 2013, Scott Xe <[email protected]> writes:

Appreciate your good advice! My further check with the multiple sockets indicates that although the power cable consists of 3 cores, the earth connection is for the mains sockets connection and the product is of class 2. I compared with other similar type of portable extension sockets and believe they are all of class 2 and the earth connection has no relation to its safety construction. Thus the data shall be:

240 V AC 50 Hz "Double Square Symbol"

I do not believe this is correct. It is difficult when it is not clear which safety standard applies, but if a product has a safety earth conductor in the cable, it *must* be regarded as Class I. Class I products are allowed to have parts that meet the requirements for Class II.

I looked at several extension sockets here, and none have the double-square symbol, but they also do not have the statement "This product must be earthed". They do have statements about connecting the product with the correct 13 A cable to a 13 A plug.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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