Can someone take a look at this wiring..

[Monkeh]

Really. So many houses I've come across wired in imperial 7/029 cable and never seen a ferrule.

7 solid strands are a different situation, now aren't they?

So many fitted 13A plugs on bought equipment and have occasionally seen a ferrule.

Manufacturers are cheap, your point?

Hey why not just twist and tin it with a soldering iron?

... because solder creeps.

 

[winston1]

Really. So many houses I've come across wired in imperial 7/029 cable and never seen a ferrule.

7 solid strands are a different situation, now aren't they?

Are they? So what is the number of strands when one has to start using a ferrule, and where is this written down?

 

[JohnW2]

7 solid strands are a different situation, now aren't they?

Are they? So what is the number of strands when one has to start using a ferrule, and where is this written down?

I think it's probably more a question of the size of the strands than the number of them - but I have no idea as to what guidelines, if any, exist.

With fine strands in a simple screw terminal (particularly if it's a fairly large one), it's only too easy for a good few (theoretically most/all) of the strands to get 'up the side' of the screw and therefore not to be effectively terminated.

Kind Regards, John

 

[flameport]

yes it does.. newly fitted unit last year.

the socket is already installed any harm in leaving it?

No, but it was a waste of money installing it.

With 2 RCDs, there is no way to know which one will trip when there is a fault.
The socket might trip before the RCD in the consumer unit. Or the CU might trip first. Or both could trip at the same time.

 

[Gutterball]

526.9 Connection of multiwire, fine wire and very fine wire conductors 526.9.1 In order to avoid inappropriate separation or spreading of individual wires of multiwire, fine wire or
very fine wire conductors, suitable terminals shall be used or the conductor ends shall be suitably treated.
526.9.2 Soldering (tinning) of the whole conductor end of multiwire, fine wire and very fine wire conductors is not permitted if screw terminals are used.
526.9.3 Soldered (tinned) conductor ends on fine wire and very fine wire conductors are not permissible at connection and junction points which are subject in service to a relative movement between the soldered and the non-soldered part of the conductor.