MWC for changing MCB's to RCBO's

[Mikegh]

Storage heaters on Rcbos ?

How does that work out ?

 

[Strima]

Those C2's aren't justified IMHO.

Also:

Outside Light Damaged
Schedule Item contravened:
5.20 - Adequacy of working space/accessibility to equipment (132.12; 513.1)

How does a damaged accessory come under 5.20?

 

[timhoward]

Few minor things.
Circuit 11 Zs....
Circuit 13 Zs suggests an error or didn't tighten something somewhere after R1+R2 (Ze is 0.3)
High R1+R2 on kitchen sockets.
I'd personally label 4 storage heater breakers rather than C2 the missing labels.
Bigger things....
Outside light is just weird, would need to see.
RCD coding's are over the top, at least in terms of BPG4.

Wondering if a Hager 63A 30am RCD main switch on DB2 is the quickest/easiest/most economical solution?

 

[Boat_Boy]

Thanks for your replies,
I think they are a little OTT on it as well.
The outside light is a little to the right above the lintel of the front door and is not connected to any circuits.
Storage heaters are hard wired.
I suppose using RCBO's on each circuit would leave the other circuits working if a fault developed, but not offered as an remedial option.

Thanks for yor help so far.

B

 

[loz2754]

0.3 ohms Ze does not tally with pscc of 3kA

 

[Dave OCD]

The shower and cooker circuits both have very high R1 & R2 readings , they would have to be quite a length for those results to be correct ! And he's given R1 & R2 readings for all four storage heater circuits, so clearly then knows which breaker serves each point- why not just label the board instead of giving another ludicrous C2 code ?! This kind of attitude within our trade really p155es me off.

 

[Boat_Boy]

No more than 6 meters for both if that

thanks

B

 

[Doomed]

Might be cheaper to get someone decent to redo the EICR

 

[Dartlec]

Several issues already noted...

To me this looks like a (mostly) properly completed inspection followed by lack of judgement or experience leading to silly or inappropriate coding.

I assume the cooker rating is not actually a 6A but 32A or similar for a 6mm feed? R1+R2 looks a bit high for both shower and cooker in any case, but that could be down to poor connection where testing...

With the possibly exception of the outside light, which can't make much comment on without seeing it or further information, I don't think any of the other C2s are ones I would give...

Even the person from NAPIT found it hard to justify the C2 for all cables less than 50mm when confronted about it - I wonder if the inspector in this case actually verified whether any of the cables ARE less than that anyway, given the limitations...

This is where the problem with guidance comes in - NAPIT codebreakers book may suggest C2 for this, but the Best Practice Guide, which is specifically mentioned in the Government guide to PRS legislation states a clear C3, which is IMO a much more reasonable outlook.

I completely fail to see how missing labels can possibly constitute a C2 in any circumstances.

I think I'd even advise landlords to question in future when employing a inspector on which basis they plan to inspect, and consider very carefully whether they want to employ someone uses the Codebreakers book religiously.

This smacks of someone either looking for work, or going through a box ticking exercise rather than using any common sense in judging actual risk. The codes are after all supposed to be more based on risk than how closely they comply with regulations.

Though if the storage heaters were installed recently as I believe was stated it does raise the question of whether they were installed to regulations at the time...

Adding the RCBOs may have been unnecessary, but is at least an improvement to the safety of the installation. Though I'd still be interested to see how they certify them without rigging up a temporary supply to them...

 

[Boat_Boy]

Just a few quick questions

The EICR has not been signed, is this not required?
Installation is further inspected & tested: following remedial action
I thought this was a time period up to the maximum allowed per legislation?
Testing the RCD RCBO’s requires power, so they could test them anywhere to get the trip times as long as they’ve got power?

Many thanks
B