New consumer unit RCD tripping

[craig1234]

I have changed out an old fuse box for a split consumer unit (will be notified to local authority).
On one side I have sockets, cooker etc. and on the other, lighting, boiler etc.
The left hand side (RCD1) works fine and on the right (RCD2), there are no problems if just the lighting circuit is energised but if I energise the boiler MCB then both RCDs trip. I can connect the boiler into RCD1 and all works fine but if I move the extractor hood from RCD1 to RCD2 then again, both RCDs trip so it seems that any load (apart from lighting) added to RCD2 causes a trip. I thought that maybe the RCD (63A Type A) was faulty so I bought another one but same problem (new RCD has replaced RCD2 and original RCD2 now sits in RCD1 slot. Any ideas?

 

[EFLImpudence]

Pesumably, you have the Neutral in the 'wrong' Neutral bar when connecting to the 'other side' RCD.

 

[EFLImpudence]

(will be notified to local authority).

It doesn't work like that.

You are supposed to notify before you start the work - unless you are a registered electrician.

 

[Taylortwocities]

What were the results of the continuity and insulation resistance tests for each of the circuits?

What were the trip times for each of the RCDs?

 

[craig1234]

Thanks for that - you were correct - neutral was in the wrong bar!

 

[flameport]

(will be notified to local authority)

Unlikely.

 

[craig1234]

Will be!

 

[Taylortwocities]

Will be!

Let us know how you get on with that.
Thanks

 

[markyd1]

Will be!

Should have been already........can anyone else smell waste in a cows field

 

[craig1234]

As I said - will be!! Wouldn't have said that if it wasn't true.

 

[craig1234]

So, for all you non-believers, the electrical works were successfully signed off today - if I say I am going to do something then I do it!

 

[Risteard]

So, for all you non-believers, the electrical works were successfully signed off today - if I say I am going to do something then I do it!

Fraudulently?

 

[craig1234]

What does that mean?

 

[DiyNutJob]

What does that mean?

Are you a registered electrician? Did you do the work yourself? I am DIY'er and curious about what is possible.

 

[winston1]

I have changed out an old fuse box for a split consumer unit (will be notified to local authority).
On one side I have sockets, cooker etc. and on the other, lighting, boiler etc.
The left hand side (RCD1) works fine and on the right (RCD2), there are no problems if just the lighting circuit is energised but if I energise the boiler MCB then both RCDs trip. I can connect the boiler into RCD1 and all works fine but if I move the extractor hood from RCD1 to RCD2 then again, both RCDs trip so it seems that any load (apart from lighting) added to RCD2 causes a trip. I thought that maybe the RCD (63A Type A) was faulty so I bought another one but same problem (new RCD has replaced RCD2 and original RCD2 now sits in RCD1 slot. Any ideas?

It is a waste of money randomly changing things when you have not diagnosed the problem.