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RCBOs consume between 1.5 and 2.5 watts for each pole - according to Wylex. Have a CU with largish bank of DP RCBOs then the annual cost of just having RCBOs is substantial. It is not just a few quid a year in electricity costs to have them. My question is:

Do RCBOs still consume electricity when switched off?
 
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It is not 32A protection, it is socket outlets rated at 32A or less.

It is describing the current rating of the socket outlet, not the rating of the protective device. You are misunderstanding the regulation as it is written.

If the regulation had included comma's like this:

AC final circuits, supplying socket-outlets, with a rated current not exceeding 32 A

then it would have the meaning you describe, but it does not.
Why bother educating him.
 
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