C2 Vs C3 for no RCD on various circuits

[n180]

That's true, however in most cases what you can see of the cable is less than 50mm depth.

What I'm asking I guess is, all the circuits 1 to 5 I mentioned above, can in general constitute c3 because it met previous regs, however what if:

A. You know or can see it's less than 50mm or
B. You don't know the depth, is a LIM on the depth enough to justify a c3 or would an rcd now be a requirement?

 

[Risteard]

can in general constitute c3 because it met previous regs

Forget whether it complied with previous Regulations or not. It really has no relevance as to its safety given our current (excuse the pun) understanding of this. Instead just consider it on the basis of what safety deficit a non-compliance poses, and how serious that is.

 

[davesparks]

can in general constitute c3 because it met previous regs, however what if:

No, it is C3 because it is not a potential danger, it is something which could be improved for safety. It is additional protection only.

B. You don't know the depth, is a LIM on the depth enough to justify a c3 or would an rcd now be a requirement?

If you have an agreed limitation to the inspection then that is something that you do not inspect or test, you don't give it any 'C' code, you just record LIM against that item to indicate that it was a limitation on the inspection.




If an RCD is required for additional protection but is not fitted then it will generally be a C3, the protection it gives is additional to the primary protection.

If the RCD requirement is not for additional protection but is as a part of the primary form of protection (fault protection for example) then it would be a C2 for it not being fitted.

 

[littlespark]

Presumable no SPD, plastic CU, so another couple C3’s there.

If there’s no bonding, then it didn’t comply in the first place, so that would be a C2. Can’t have EEBADS without the EEB.

Everything can be solved by replacing the board to all RCBO of course, so a cover letter with the report, a quote as mentioned by me earlier, and hope they think it’s a job that must be done.

 

[cliffed]

Good point.

For this scenario, no supplementary bonding.

C2 then with no supplementary….ok if Rcbo protected

 

[westward10]

The fact it is a rented property is not relevant.

 

[rewireIT]

C2 = danger if single fault occurs (e.g. no RCD outdoors, as cable cut while gardening and contact with Earth likely)

Hey, can you explain to me how the gardening example is different to no RCD protection inside a property? Is it just the contact with the physical earth which is different?

Thinking on that, how can we actually get a belt if we're standing on wood inside our home, since we're not in contact with earth/are only in contact with something that is an insulator?

 

[westward10]

If your body is completely isolated from any means of return then you shouldn't receive a shock. I used to stupidly demonstrate this to apprentices by happily touching live parts.

 

[Flanders]

Hey, can you explain to me how the gardening example is different to no RCD protection inside a property? Is it just the contact with the physical earth which is different?

Thinking on that, how can we actually get a belt if we're standing on wood inside our home, since we're not in contact with earth/are only in contact with something that is an insulator?

Because you are standing directly on the ground which is also possible wet. As you say less likely to get a larger shock standing on your wooden floor in your house. Also your more likely to cut through a cable with the hedge strimmer than a hairdryer

 

[rewireIT]

If your body is completely isolated from any means of return then you shouldn't receive a shock. I used to stupidly demonstrate this to apprentices by happily touching live parts.

What were you standing on when you did this lol? I've seen all the vids of people doing this but even if i knew i was insulated i wouldn't have the balls to do it.