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Discuss First thread from Newbie on SWA termination in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Paul Willoughby

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I am supplying my garage with power, using a 6mm SWA cable it is 18m from the main CU.
I am digging a trench and following all 17th edition guidelines.
I was originally going to come off of the main CU using a 32a RCBO off of the main switch into an rcd protected 2 way (6a and 20a) unit in the garage.

My issue is that my CU is in the hall and I do not want the SWA terminated through the bottom of the CU as it will look unsightly.
Can i terminate the SWA on the other side of the wall in a termination box (henley block), then bring the connection to the RCBO through the wall with twin and earth.

If so can you recommend a termination box that meets 17th edition guidelines.

Thank you for your help
 
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telectrix

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you have a couple of options.

1. fit an adaptable box adjacent to CU and gland SWA in that, leaving the tails long to reach into CU ( if plastic box, you will need to earth the gland with banjo and fly lead.

2. Fit IP rated ad. box outside and as you said got from CU in T/E and join to SWA in box.

What earthing system are you using, exporting the house earth, or rodding at garage? are you using 3 core SWA? if so don't forget the armour needs to be earthed even if not used as cpc.

Lastly, forget the RCBO unless the feed from the CU needs RCD protection. you don't want 2 RCDs inn series.
 

AndyL

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Follow all of the above, can't go wrong
 
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Paul Willoughby

  • Thread Starter Thread Starter
  • #4
Thanks for your advice so far, Just a quick question.

I am also looking to run power to my shed / office at the back of my garden, so would I be better from the start to split the existing tails from the meter, put in a henley block then supply tails to the existing Main CU and put another smaller metal CU supplied from the henley block to supply both front garage and back shed (this will be in the cupboard with the supply out of sight.
Then i can just terminate both SWA's directly into this second CU in 32a MCB's

Cheers Paul
 
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SirKit Breaker

  • Thread Starter Thread Starter
  • #6
I am supplying my garage with power, using a 6mm SWA cable it is 18m from the main CU.
I am digging a trench and following all 17th edition guidelines.
I was originally going to come off of the main CU using a 32a RCBO off of the main switch into an rcd protected 2 way (6a and 20a) unit in the garage.

My issue is that my CU is in the hall and I do not want the SWA terminated through the bottom of the CU as it will look unsightly.
Can i terminate the SWA on the other side of the wall in a termination box (henley block), then bring the connection to the RCBO through the wall with twin and earth.

If so can you recommend a termination box that meets 17th edition guidelines.

Thank you for your help
With regard to a suitable enclosure. Go into local wholesaler, explain what it is you need, and he will sort you out for not a lot of cash. Its all about the IP rating, and if my memory serves me right it will be IP65 if its for outside, and IPXXD if its inside, but i am not off to look in the regs to check, cos its pub time.

Cheers...............Howard
 
Are you part p registered Paul? If not, you will need to notify LBC (and pay the large fee) in advance as this is a notifiable job.
 
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shocking_eg

  • Thread Starter Thread Starter
  • #8
Are you part p registered Paul? If not, you will need to notify LBC (and pay the large fee) in advance as this is a notifiable job.
you love your notifiable jobs dont ya :p
 
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Barry Rathbone

  • Thread Starter Thread Starter
  • #10
Do we see a RCD stutter? Both 30mA? hmm
 
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Paul Willoughby

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  • #11
Have just taken and passed part p and 17th edition exams, am going to use this job and a consumer unit change as my jobs for my assessment with ELECSA. Have informed LBC and are happy to waive fee.

Thanks for all help on this one chaps.
 
Have just taken and passed part p and 17th edition exams, am going to use this job and a consumer unit change as my jobs for my assessment with ELECSA. Have informed LBC and are happy to waive fee.

Thanks for all help on this one chaps.
In that case, good luck with the assessment. :party:
I do hope you have more training under your belt than just part p and 17th edition tho :)
 
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Engineer54

  • Thread Starter Thread Starter
  • #13
In that case, good luck with the assessment. :party:
I do hope you have more training under your belt than just part p and 17th edition tho :)
I doubt it, ...That's about the standard these days, for both training centers and the so-called part P service (scam) providers competency level requirement!!
 
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Octopus

  • Thread Starter Thread Starter
  • #14
On the "jobs for the assessment" you've decided to undertake a task which is suitably difficult and will mean that the assessor will be able to assess a number of your skills.

Good luck!
 
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nickblake

  • Thread Starter Thread Starter
  • #15
I Like what Tel has said , the only alteration i would make is to use a galve through box and run a seperate earth to it smaller than an adaptable box and looks alot neater appart from that same as Tel
 
I doubt it, ...That's about the standard these days, for both training centers and the so-called part P service (scam) providers competency level requirement!!
There do seem to be a lot of basic skills missing from the portfolio of "trained & qualified" professionals these days...
 
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Reply to First thread from Newbie on SWA termination in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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