I Kept Saying To Myself...This Can't Be Right...

first photo... the shower is quite obviously protected by a 40A RCBO.. built in protection.. or don't you lot look at the pictures carefully?

the taped breaker in the bottom photo is taped in the off position..
 
okay then... :roll:

an RCD has no over current protection, so how can it be a 40A rcd?

rcbo's have built in overcurrent protection... so it's a 40A rcbo...

the rcd on the right is most likely the incomer ( as it's labled main switch ) and it's then connected to the 40A rcbo as the old wylex is only rated at 30A... without seeing it with the covers off, or in a wider perspective it's difficult to tell

the main panel is wired through the rcd's then the live is put through a breaker, to the meter and out to the caravans.. the missing meter is most likely off the taped off breaker.. so the ends in the terminal block are dead ( or at least the phase is.. the rcd is on so the neutral is still "live" )
 
It can be a 40A RCD if the contacts are only rated 40A. Just because it has 40A written on it, it doesn't mean it in an RCBO. Modern RCBOs have a type written on them too, i.e. B40 (the ones to BSEN61009 do anyhow.)

edit:
Which wylex?
 
I have to agree with numerical spark here.

They are both RCD's. The Hager one has the french, something like "interrupteur" or such like printed on it.

The MG one has RCCB on it, both are 0.03A rating, as is the one in the external dist. cab.

The Wylex board is a 6 way, rated at 60A.

As I said, there is already a 30mA GE RCD in the external box feeding a meter which then runs via SWA to the meter in the picture. The incoming tails are wired to the "LOAD" terminals of the meter in the static. The "MAINS" terminals are then wired to the Wylex board. The joint where the tails for the shower supply are connected is concealed.
 
then my appologies to all, I didn't realise they bothered putting max ratings on rcd's.. guess i thought they were all 100 / 80A rated..

and by 30A wylex, i meant per way not total...
 

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