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  1. jerseymick
    Offline

    jerseymick New EF Member

    Location:
    dorset
    Business Name:
    none
    Hi. I would like to supply power and lighting to my new garden shed from my bungalow which is approximately 4 mtrs, away. I intend to have a small fluorescent light and two double 13amp sockets. The shed will also house an under counter freezer and a tumble dryer.

    I have discovered an old 2.5mm twin and earth cable running through my loft from the RCD consumer unit in the kitchen , and exiting under the eaves of the bungalow. (possibly supply to old demolished garage) , which incidentaly isn't live !

    There is spare capacity in the consumer unit so was thinking of running a new 4mm twin and earth along the same route an exiting under the eaves into a weather proof junction box. From this point i would run a 6mm SWA cable along a catenary wire into the shed , connecting to a garage/shed consumer unit , ( maybe a screwfix BG 5 module 3 way unit ).

    From this unit i would run 2.5mm twin and earth to light switch , light and sockets.

    My intention is to do all the donkey work but let a qualified electrician do all the connecting up , as i have been quoted between £260 - £325 for supply and fix.

    Am i correct with the cable choices and unit choices. All advice appreciated.

    Cheers. Mike.
     
  2. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    Sounds more than reasonable to me.

    And good luck getting a spark to agree to sign off your work - I wouldn't and never do........
     
    • Agree Agree x 4
  3. HandySparks
    Offline

    HandySparks Trusted Advisor

    Location:
    Hampshire
    Business Name:
    Neish Electrical Services
    First find your qualified electrician. Then agree an installation design and the tasks that he will let you do and still 'sign off' the work. If you do it any other way, you stand a fair chance of not finding anyone to co-operate.
     
    • Like Like x 1
  4. buzzlightyear
    Offline

    buzzlightyear Electrician's Arms

    Location:
    star command
    is this cost cutters Corner or what!
     
  5. Matthewd29
    Offline

    Matthewd29 Regular EF Member

    Location:
    Belfast
    That sounds like a good price to do it I can't see anything wrong with it. I also agree with murdoch, id be very reluctant to put my name to another electricians, and definitely not a DIYers
     
    • Agree Agree x 1
  6. Lip.82
    Offline

    Lip.82 Active EF Member

    Location:
    Middlesbrough
    Hi I've just been reading through the OP and the cable sizes and the running a 2.5mm to the light switch doesn't seem right to me. Am I right in thinking that? I'm still learning and gaining experience in the trade and just wanting to know if you could put my mind to rest on this one please.
     
  7. HandySparks
    Offline

    HandySparks Trusted Advisor

    Location:
    Hampshire
    Business Name:
    Neish Electrical Services
    In this case, 2.5mm² cable is unlikely to be a sensible choice for lighting.
     
  8. Spoon
    Offline

    Spoon Trusted Advisor

    Location:
    Lancashire
    Hi, welcome to the forum.

    So you are adding a new circuit. What size breaker are you going to use?

    Why SWA? and why 6mm
     
  9. Spoon
    Offline

    Spoon Trusted Advisor

    Location:
    Lancashire
    Also, as this falls under Part P, will you be notifying the relevant authorities? This will, of course, cost money...
     
  10. DJ Ovengloves
    Offline

    DJ Ovengloves Regular EF Member

    Location:
    Purley
    Is the op on holiday (with all the sparkies)?
     
    • Funny Funny x 1
  11. Lip.82
    Offline

    Lip.82 Active EF Member

    Location:
    Middlesbrough
    I don't understand why he would run a 4mm T&E then a 6mm SWA. Would I be wrong in thinking that a 2.5mm swa from the cu to the shed would be acceptable?
     
  12. Spoon
    Offline

    Spoon Trusted Advisor

    Location:
    Lancashire
    It's hard to say what is good for the OP if he doesn't come back to us to give us more info.
    In #8 post, I ask what size breaker he is wiring this to. Of course this will determine the min size of the cable.. (along with a few other factors). Still waiting for the OP to come back on this.
    Again, in #8 post, why SWA?
     
  13. Lip.82
    Offline

    Lip.82 Active EF Member

    Location:
    Middlesbrough
    I would use SWA because it's going from the house to the shed. As you know yourself SWA offers mechanical protection so if it's getting buried or clipped from the house to the shed then I would of thought it's the best cable to use. For what OP said he's putting in the shed I was thinking 2.5mm SWA on a 20A mcb. Then in the shed have sockets on rcbo or if the cable is on an rcd in the main board then no need for rcbo in the shed. Like I said I'm still gaining experience and like reading the posts on here and asking questions,
     
  14. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    The OP appears to be a DIY chancer.

    If you are learning the trade with a view to earning a living, then giving away step by step info to Joe Public on the web won't help your income
     
    • Agree Agree x 1
  15. Lip.82
    Offline

    Lip.82 Active EF Member

    Location:
    Middlesbrough
    Fair point. I was just trying to find out if how I thought it should be done was right.
     
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