RCD - do I have one (see picture!)

[darrenh]

Hi

I am just working out if I can buy some underfloor heating - it says it needs tobe connected to an RCD.

I assume that this means my Consumer Unit needs to have an RCD in it?

The CU is a Hager - given it doesnt give any info I can't tell if this is an RCD or not - here is a picture!

CU

• darrenh
• 22 Aug 2008
• 1

cheers

Darren[/img]

 

[Spark123]

The item on the left hand side looks like an RCD, what does the writing say on it (bit blurred)? The MK MCB shouldn't be in there.

 

[darrenh]

Hager

63A
50-60hz

switch points to: I/ON
there is also a smaller button to the left saying 'test'.

!

 

[Spark123]

Can you see a trip rating, often written as I/\n? Could be 0.03A, 30mA etc?
Having one main RCD isn't considered good practice as if it trips you lose power to the whole installasion.

 

[darrenh]

It says the following:

63A I /\ n, 0, 1, A

 

[Spark123]

What rating of RCD does the underfloor heating ask for? The RCD you have appears to be a 100mA device.

 

[darrenh]

it needs to go through a 13amp fuse spur and collects power of 2800 watts - there will be two of them - one on each indivdual ring main.

 

[Lectrician]

Underfloor heating requires a 30mA RCD. Yours in 100mA.


For a simple solution, fit an RCD-Fused Connection Unit rather than a standard Fused Connection Unit.

Clicky

 

[darrenh]

you are a good man! Thanks for the input.

 

[ban-all-sheds]

Do you live in England or Wales?

 

[darrenh]

England Hemel Hempstead - any reason?

 

[ban-all-sheds]

In that case this work is notifiable.

 

[darrenh]

thats fine - I'm not doing it I just wanted to know if I could buy it!

 

[ban-all-sheds]

Fairy Nuff

 

[mattysupra]

have a good think before you install electric underfloor heating!
There are many bad points to the stuff!