Continuity test after Ring Circuit

[Neptune]

After completing a new RFC or modifying an existing one, I will always test continuity across all 3 conductors at the Consumer unit. I use the continuity function on my Fluke 2 pole tester to do this. This is done whilst the circuit is dead.

Prior to this, I am very diligent with the conductors in each socket terminal and ensuring that I have the correct amount of cable length. I also screw the terminals tight again once the excess cable is bent in the back box and before I screw in the socket plate incase anything had come loose.

This means that when it comes to the continuity test, everything is okay. Else, I will revisit each socket, rectify and test again…

I know “proper” electricians will do R1, etc. tests using a low ohm meter. What am I missing without doing these tests and can any of these be done without buying the very expensive low ohm meters that electricians have?

I appreciate that the very simple response is that these test have to be done.

Thanks in advance.

 

[Electro-tech]

As timhoward mentions, it is load related with an imbalance, which might be telling you your drill is on the way out. There is a lot of information regarding how RCD's Work online with pictures too.

 

[Neptune]

might be telling you your drill is on the way out.

I don’t follow this part. I can understand that the drill is drawing current which is then not returning via N, hence the trip.

 

[timhoward]

I don’t follow this part. I can understand that the drill is drawing current which is then not returning via N, hence the trip.

I'm not sure he realised there was a N-E fault at a socket.

 

[Electro-tech]

i.e. phone charger plugged in seemed okay but the hammer drill would immediately trip it?

Apologies having a senior moment should have read the whole senario again.