Why you need to unplug devices for rcd troubleshooting

Often people with tripping rcds will contact me to say they have switched off all the sockets to no avail. You need to unplug everything, not just switch it off. The reason for this is some socket outlets only switch the live wire (known as single pole). rcds detect imbalances between live and neutral,

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Posted in rcd troubleshooting


The ring final socket circuit

A ring final circuit is a common method of installation to supply 13 amp socket outlets in domestic and commercial premises.  A cable leaves the consumer unit and forms a ring supplying all the sockets and returns to the protective device. Because the current can travel in either direction, the overload protective device is either 30 or 32 amps.

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Posted in Electrical Inspection


Why you can’t replace a fused connection unit with a light switch

“I’ve already bought the light switch, we’ve just got into a bit of a muddle trying to swap it over” said the customer.

When I called in to see the customer it wasn’t a light switch they were trying to replace; it was a fused connection unit which had become cracked.  

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Posted in Electrical Inspection


Live and Neutral – reversed polarity

“I thought the toaster was faulty, so i bought another one only to discover it did exactly the same as the old one. I then realised it must be a problem at the socket as both toasters worked fine everywhere else. I needed an electrician”.

The customer that called me today realised there was a problem in their new Cardiff home and contacted me to investigate.

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Posted in Electrical Inspection


Customer concerned after power loss

I carried out an electrical inspection today for a customer in Pen-y-lan who was concerned over loosing power in their Cardiff home.  There was only one rcd so when it tripped they lost power in the whole house. New consumer units have two rcds to split the installation, or rcbos for each circuit preventing inconvenience in the event of a fault.

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Posted in Electrical Inspection


Another domestic electrical inspection carried out

I was working in a terraced house today carrying out an inspection for a customer who recently purchased their first Cardiff home and wanted the fixed wiring checked by an electrician before making any plans for decorating. It’s a shame more home buyers don’t have the electrics checked before making a purchase and spending money on things like new flooring and decorating.  

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Posted in Electrical Inspection