Discuss Please help in the Electrical Forum area at ElectriciansForums.net

Reaction score
8
Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Hi,

I would genuinely appreciate some guidance. I am currently completing training for my City & Guilds 2391-52 practical, and as there is some time before I take the test, so I wanted to get some on hands training done at home, in safe manner. I've decided to make my own single phase training board, like the one I've used at the training centre. I am now stuck as I've hit a knowledge barrier and can't find the appropriate solution. Please see images and questions below.

This is my training board
IMG_1863.jpeg

This is how I plan on powering the training board, with a 13a fused cable
IMG_1864.jpeg

My problems start here, I plan on using a 2.5mm cable to connect to this, is this ok?
IMG_1865.jpeg


Assuming a 2.5mm cable is ok for the front side, at the rear I have another problem, as I have 16mm supply cables feeding the consumer unit. I need to step these down in size to fit the 2.5mm cables from the front. What is the correct procedure for doing this and what do I need to buy to fit and proceed?

I will also run a 2.5mm earth cable from the socket on the front side to the consumer earth bar and also run another 10mm earthing cable from the consumer unit earth bar to the main protective bonding on the training board. Is this ok?

IMG_1868 2.jpeg

I know there are a lot of questions here and please understand that I am in training and it's hard to get tutors to help you when you're not in the training centre. I would really appreciate guidance with this. I hope I'm on the right path with what I'm doing, and if not I am happy to learn.

Thanks
 

telectrix

-
Mentor
Esteemed
Arms
Reaction score
62,314
ditch the 16mm tails and use some 6.0mm. you'll then be able to terminate in the 16A plug. bear in mind it's a test/training rig and therefore does not need to use real world cables. as long as you know that on a real job, you'd use whatever cables were required to comply.
 

Lister1987

-
Trainee
Esteemed
Reaction score
827
Nice looking rig, beats mine for neatness 🤣 I just ran mine from 2.5mn artic flex into the bottom of a Henley Series 7 cutout, works fine as you like, even if it's like throwing a hotdog down a bowling alley. Had 25mm tails coming off it to the DB bit effectively everything from the top of the cutout was as it would be in the field, complete with seal fairy visit 😂
 
Reaction score
8
ditch the 16mm tails and use some 6.0mm. you'll then be able to terminate in the 16A plug. bear in mind it's a test/training rig and therefore does not need to use real world cables. as long as you know that on a real job, you'd use whatever cables were required to comply.
Thanks Teletrix! I did as you suggested and got the training unit live, thank you again for your guidance. I decided to connect a one way lighting circuit as per the images below. I've blown 2 bulbs and can't understand why? I've doubled triple checked the wiring and also done a polarity test on the incoming for the DB (thought that would be a good first step) but all looks ok from that end. When I power up the board, I have all fuses on and I'm not sure if this is causing a problem, or if I've somehow wired the training board incorrectly?

IMG_1869.jpg
IMG_1870.jpg
IMG_1871.jpg
 
Reaction score
8
Nice rig well done, is the socket RCD protected which you will be plunging into.
Hi, no the socket that I'm plugging into isn't RCD protected. Old house and old consumer unit. Unfortunately the house isn't mine so it's not my choice. Once I'm competent, then I'll go about sorting this out myself
 
Reaction score
8
Nice looking rig, beats mine for neatness 🤣 I just ran mine from 2.5mn artic flex into the bottom of a Henley Series 7 cutout, works fine as you like, even if it's like throwing a hotdog down a bowling alley. Had 25mm tails coming off it to the DB bit effectively everything from the top of the cutout was as it would be in the field, complete with seal fairy visit 😂
Thanks Lister! Haha, hotdog down a bowling alley!
 

7029 dave

-
Mentor
Arms
Reaction score
2,572
Hi, no the socket that I'm plugging into isn't RCD protected. Old house and old consumer unit. Unfortunately the house isn't mine so it's not my choice. Once I'm competent, then I'll go about sorting this out myself
By a plug in rcd , you will no doubt be doing live testing so I advise using one.
Just some constructive criticism, you have copper showing on the light switch terminal, would also be better to double over your ends on single core terminations.
 
Last edited:
Reaction score
8
By a plug in rcd , you will no doubt be doing live testing so I advise using one.
Just some constructive criticism, you have copper showing on the light switch terminal, would also be better to double over your ends on single core terminations.
Thanks for suggesting Dave, I will buy one tomorrow
 

telectrix

-
Mentor
Esteemed
Arms
Reaction score
62,314
in the CU you have your N for the lights in the wrong N bar. should be the N bar to the right that corresponds to the right hand RCD, should be in the no'10 slot to correspond with the no,10 MCB/
. likewise the cpc should be in no.10 earth slot.
 
Last edited:

Reply to Please help in the Electrical Forum area at ElectriciansForums.net

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
Top