Part P assessment, what todo...

[eyeball]

Hi all,
I'm due an assessmnt for the first time at the end of the month. Now I dont work day today doing electrics, just normally do it on my own properties but I want my part P just incase I decide to to other work.
The assessor will want to see what work ive done and probably what I'm doping at present. The problem is all my work so far has been simple swaping of sockets and other fittings with no notifiable work. So I was thinking of rewiring my garage/ workshop. It also needs rewiring as its not ideal at present.
This is what I'm thinking....
At the moment there is only one consumer unit that is rcd prtoected and this is in the house so I'm thinking of running a 10mm twin and earth under the floor from the front to the back of the house, then chase out the drive to go to the garage. This run is about 15 meters max. Then install a 2 was c/u with a 63A main. Then this will just feed the 3 double flouresents for lighting and poss 6 double sockets. There is no plan of using high current equipment in the workshop, just battery chargers and a small electric heater. I'm thinking of poss having a summerhouse at some point and this will be at the end of the garden behing the garage/workshop so I'll be wanting to put lights and power in there aswell but nothing heavy again.
The main consumer unit in the house will feed the 10mm T&E via a 40 Amp mcb. Does this project sound ok for my asssessment or do you reccommend anything else?
Cheers,
Paul

 

[SirKit Breaker]

I would fit a 60a metal switchfuse next to your existing CU in the house, fit a Henly block and earth block to connect your existing tails and the new tails for the garage supply. Then run a 10mm 3 core SWA cable to the garage not twin and earth, bury it or do whatever as its SWA you can clip it external etc if needs be, but for this job T&E is a no no. In the garage fit a Garage CU and wire up your circuits as you intended.

Make sure you earth the SWA armouring at both ends.

by doing this if you develop a fault in the garage you wont knock the house off and the assessor wont beat you with a stick for using T&E.

 

[monkeyelectric]

Hi all,
I'm due an assessmnt for the first time at the end of the month. Now I dont work day today doing electrics, just normally do it on my own properties but I want my part P just incase I decide to to other work.
The assessor will want to see what work ive done and probably what I'm doping at present. The problem is all my work so far has been simple swaping of sockets and other fittings with no notifiable work. So I was thinking of rewiring my garage/ workshop. It also needs rewiring as its not ideal at present.
This is what I'm thinking....
At the moment there is only one consumer unit that is rcd prtoected and this is in the house so I'm thinking of running a 10mm twin and earth under the floor from the front to the back of the house, then chase out the drive to go to the garage. This run is about 15 meters max. Then install a 2 was c/u with a 63A main. Then this will just feed the 3 double flouresents for lighting and poss 6 double sockets. There is no plan of using high current equipment in the workshop, just battery chargers and a small electric heater. I'm thinking of poss having a summerhouse at some point and this will be at the end of the garden behing the garage/workshop so I'll be wanting to put lights and power in there aswell but nothing heavy again.
The main consumer unit in the house will feed the 10mm T&E via a 40 Amp mcb. Does this project sound ok for my asssessment or do you reccommend anything else?
Cheers,
Paul

Sounds ok, under the drive if you're using t+e you would have to put it in ducting or the like,i would'nt use it though, would be better to use swa for the run really

 

[eyeball]

Thanks for the replies guys,
I was thinking of using SWA which would be better alround. I was going to run it under the ground in ducting but please excuse my ignorance..but is the T&E a no no due to the size of the cpc ans zs readings? I want todo as good a job as poss so i'll do as you advise sirkit-breaker inc puting the 60A metal switch fuse and henly blocks. But would I have been totally wrong in doing it the way I had thoughtoriginaly and going straight intoi the main consumer unit. As I mentioned before my experiance is limited when it comes to domestic wiring. I have mainly done control panel work in the past but all advice is much welcomed as I want to do things right.
Regards,
Paul

One more question, looking at the calcs for this install im thinking that maybe 6mm swa could be used as the loads are going to very small??....Nope I'll take that back as I mentioned in the first post, I would like to put a summerhouse down there at some point and running the 10mm would make it more future prrof.lol

 

[monkeyelectric]

Thanks for the replies guys,
I was thinking of using SWA which would be better alround. I was going to run it under the ground in ducting but please excuse my ignorance..but is the T&E a no no due to the size of the cpc ans zs readings? I want todo as good a job as poss so i'll do as you advise sirkit-breaker inc puting the 60A metal switch fuse and henly blocks. But would I have been totally wrong in doing it the way I had thoughtoriginaly and going straight intoi the main consumer unit. As I mentioned before my experiance is limited when it comes to domestic wiring. I have mainly done control panel work in the past but all advice is much welcomed as I want to do things right.
Regards,
Paul

One more question, looking at the calcs for this install im thinking that maybe 6mm swa could be used as the loads are going to very small??....Nope I'll take that back as I mentioned in the first post, I would like to put a summerhouse down there at some point and running the 10mm would make it more future prrof.lol

nothing wrong with putting it in the consumer and this would probably be the route that i would take as long as there is enough room, if it were a bigger demand i would do as sintra said

 

[eyeball]

Hki Monkeyelectric, thanks for the reply, i wasnt sure if my idea was a a good one or not but as you say if the loads isnt to excessive then run it into the C/U. So if the load was small and the calcs worked out would you have gone the T&E route or SWA? I'm just thinkings about the physical size of the SWA10mm and wether it is going to be to large for where my c/u is at the moment.
I'll have to go and take a look at the swa for myself and see what can be done???
Cheers,
Paul

 

[monkeyelectric]

Hki Monkeyelectric, thanks for the reply, i wasnt sure if my idea was a a good one or not but as you say if the loads isnt to excessive then run it into the C/U. So if the load was small and the calcs worked out would you have gone the T&E route or SWA? I'm just thinkings about the physical size of the SWA10mm and wether it is going to be to large for where my c/u is at the moment.
I'll have to go and take a look at the swa for myself and see what can be done???
Cheers,
Paul

I would'nt use t+e its much better to use swa for anything outside, just terminate it into an adaptable box, you could try dropping the size to 6mm or even 4mm if the characteristics of the installation allow, 6mm would be better as you say' future proof ', 10mm is abit more awkward to work with if space is limited but depends on the load you'll be putting on it in future and of course volt drop

 

[eyeball]

Yes 10mm swa sounds tricky, 6mm sounds easier to accomadate and probably more cost effecrive. All I have is a floor standing elecric heater, battery chargers and lights.
So 6mm swa, fed from it own adaptable box with its own tails via henly blocks. Into garage 2 way consumer unit. Then feeding the ring main and lighting radial.
So would say a 45Amp breaker in the adaptable box and similar in the braer in the garage??

 

[monkeyelectric]

Yes 10mm swa sounds tricky, 6mm sounds easier to accomadate and probably more cost effecrive. All I have is a floor standing elecric heater, battery chargers and lights.
So 6mm swa, fed from it own adaptable box with its own tails via henly blocks. Into garage 2 way consumer unit. Then feeding the ring main and lighting radial.
So would say a 45Amp breaker in the adaptable box and similar in the braer in the garage??

Yeah, when i said adaptable box i just meant a square knockout box or ip rated one for outside wall, its just you won't be able to terminate swa into a normal consumer unit, you could however split the tails and use a small 2 waygarage consumer with rcd and 40 amp mcb on 6mm, then into another garage consumer in the garage with just main switch and mcb's for lights and sockets, you can normally terminate swa into these garage units as they have knockouts for the glands

 

[eyeball]

Lol...you had me a little confused with the earlier post and the adaptor box as I'm just looking through my electricfix cataloque at the moment and id basically come up with 2 consumer units and tapping off the tails. Just hope I can fit a c/u into the main c/u area, as its pretty tight. I quess I dont have much choice though. 6mm swa is about 53amp rating so a 40 should cover what im going to need. its adding up to be quite an expensive little project.lol.
I'll have to make sure I can get my armoured glands into the c/u otherwise its 2 adaptor boxes aswell.
Its about £70.00 for 25m of 6mm at screwfix, anyone know any where cheaper in the manchester area??