coding?

[Doomed]

Coding for a 100mA RCD covering lighting circuit on a TT system in a domestic environment?
(Sockets on a 30mA, Ze of less then 50 ohms) (test data left in office along with books, just mulling it over during dinner)

 

[Octopus]

None,but you could C3 it. A comment in the comments box to cover your reasoning maybe

 

[Leesparkykent]

I take it the lighting circuit includes the bathroom light?

 

[westward10]

None also can only Code on the lack of additional rcd protection for cables in walls, assuming they don't have earthed containment.

 

[westward10]

Oh yeah and the bathroom lighting

 

[7029 dave]

Maybe a recommendation, bloody good RA.

 

[Leesparkykent]

It would depend on if the lighting circuit supplies the bathroom light and if supplementary bonding was up to scratch for the bathroom imo.

circuit supplies bathroom, supplementary up to scratch-no code

circuit supplies bathroom, supplementary not up to scratch-C2

C3-due to lack of additional protection of cables buried in wall <50mm, not mechanically protected sufficient enough to stop the penetration of nails ,screws and the likes of or earthed metallic sheath/containment that meets the requirements of a CPC.

 

[Risteard]

None,but you could C3 it. A comment in the comments box to cover your reasoning maybe

I presume he is referring to the buried cables?

If 30mA RCD protection is required now then not coding it is not an option. (This is specifically stated.)

 

[Flanders]

Agree with all
No additional protection for cables buried less than 50mm in wall
No additional protection for circuits within a room containing a bath or shower
Both code 3 .

 

[westward10]

Gonna be a long night.

 

[7029 dave]

Gonna be a long night.

Yeah, sitting tight with me coco.

 

[GMES]

Gonna be a long night.

Why what's up mate, can't you sleep

 

[Doomed]

Thanks, thats what I thought - although there was something swimming in my head that all TT had to have 30mA in domestic for all circuits now (another C3 for that if so)

Also yeah, good Ra, in this area if the TT system is on the oxford or kimmeridge clay deposit soils we tend to get really good readings on TT systems