EIC question

[Chris sparky]

Hi all.

Need to do an EIC for a small sub main in a garage. Its fed from an 40a 30ma RCD.
In the characteristics section it asks for the main switch details. Do i put the RCD in their or the main sw in the CU?

 

[Richard Burns]

If the main isolation for the installation is the RCD then that is the main switch so use that.
Gives you a chance to fill out the RCD characteristics where an RCD is used as a main switch!

 

[Chris sparky]

If the main isolation for the installation is the RCD then that is the main switch so use that.
Gives you a chance to fill out the RCD characteristics where an RCD is used as a main switch!

Ok many thanks, Im also putting that in the part that say's complete only if the disrubution board is not conected directly to the origin?

 

[GLENNSPARK]

Ok many thanks, Im also putting that in the part that say's complete only if the disrubution board is not conected directly to the origin?

the origin of supply meaning the main incomer..
so do you think db1 is from the origin of supply....
or the origin of its supply?

 

[Richard Burns]

Glennspark answered already

 

[Chris sparky]

the origin of supply meaning the main incomer..
so do you think db1 is from the origin of supply....
or the origin of its supply?

It's connected to the origin of supply, going via the RCD then onto CU

Edit : Metre tails spilt in henley block to RCD then onto CU in garage.
So it is connected to the origin of supply.
So have i just answered my own question?

 

[Chris sparky]

So if it goes via the RCD is it still connected to origin of supply?

 

[GLENNSPARK]

It's connected to the origin of supply, going via the RCD then onto CU

Edit : Metre tails spilt in henley block to RCD then onto CU in garage.
So it is connected to the origin of supply.
So have i just answered my own question?[/QUOTE]lookin that way

 

[Chris sparky]

Ta very much

 

[Amp David]

Its fed from an 40a 30ma RCD.

And thats it? Hope not!

 

[Chris sparky]

And thats it? Hope not!

Why's that?

 

[telectrix]

i assume he means that he hopes there is further OCPDs in the shed. e.g. 16A for sockets and 6A for lighting.

 

[Chris sparky]

i assume he means that he hopes there is further OCPDs in the shed. e.g. 16A for sockets and 6A for lighting.

Ah i see, of course there is.

 

[Richard Burns]

i assume he means that he hopes there is further OCPDs in the shed. e.g. 16A for sockets and 6A for lighting.

Ah i see, of course there is.

I was thinking that if the cable is split at the henley block goes to an RCD and then there is the feed to the shed there is no overcurrent protection to the feed to the shed as there is only the RCD in place.
Unless the RCD is an RCBO.

 

[terminator]

i assume he means that he hopes there is further OCPDs in the shed. e.g. 16A for sockets and 6A for lighting.

Hope the the downstream CU Main switch is not a RCD as well (typical garage unit)? Cascading rcd's?