Discuss DNO says RCD not required in the Electrical Forum area at ElectriciansForums.net

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Rioja

New EF Member
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2
Location
Cornwall
Greetings to all, first post though been viewing the forum for a while.
By way of introduction, I am a domestic customer and not an electrician in the normal sense - my work involves subsea telecommunication cable systems operating at up to 12kV DC.

Recently got my DNO Western Power Distribution to come and install an isolator (cost about £80). When I said to the WPD installer that this was in readiness for a change of consumer unit as there is currently no RCD protection, his response was along the lines of "You don't really need an RCD as we provide a safety earth". I was so shocked (excuse the pun) by his statement that, I'm sorry to say, I didn't question this further. Needless to say, I will be totally ignoring his advice.
 

Fin170

Regular EF Member
Messages
760
Location
Devon
I'm guessing he may of been referring to not needing a Main RCD (or volt switch etc) because the system was not (or no longer) TT

Either way the average DNO man is not usually clued up on the 17th edition so I wouldn't worry
 

Landril

Regular EF Member
Messages
96
Location
Bolton
Possibly, he is only installing Main breaker on the DNO side, and i suppose it would be up to the installer to put in a board with RCD/RCBO, etc to protect the circuits.
 
D

Deleted member 26818

Greetings to all, first post though been viewing the forum for a while.
By way of introduction, I am a domestic customer and not an electrician in the normal sense - my work involves subsea telecommunication cable systems operating at up to 12kV DC.

Recently got my DNO Western Power Distribution to come and install an isolator (cost about £80). When I said to the WPD installer that this was in readiness for a change of consumer unit as there is currently no RCD protection, his response was along the lines of "You don't really need an RCD as we provide a safety earth". I was so shocked (excuse the pun) by his statement that, I'm sorry to say, I didn't question this further. Needless to say, I will be totally ignoring his advice.
Why would your installation require RCD protection in particular?
What makes it so different from the majority of other installations that are supplied with a network earth connection?
 

Landril

Regular EF Member
Messages
96
Location
Bolton
I didnt read the info properly thats why in the last post i said it would be down to the installer of the installation not the DNO istallers main switch to be RCD protected if indeed it is needed.
 
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Rioja

New EF Member
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2
Location
Cornwall
My thinking was, as this is a normal residential property and, I would imagine, the average residential customer would consider a DNO engineer installing a main isolator between the meter and consumer unit to be an "electrician" then what was said would leave the average residential customer thinking to install a consumer unit employing RCD/RCBOs would be a waste of money and offer no additional protection.
 
D

Deleted member 26818

He probablly thought that you were refering to an upfront RCD as would be installed in a TT installation.
Although it might be that he is of the opinion that additional protection by means of RCDs is a bit pointless.
 
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