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Discuss Electrical Bonding Sizes in Factory in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Carl Knowles
    Offline

    Carl Knowles EF Member

    Location:
    Darwen
    Business Name:
    Elektec Ltd
    Hello All,

    We look after an old mill/factory and ive just been given the test remedials list another company did.
    A bit part of it is bonding to steelworks and big gas pipework.

    How do i determine size needed?
    Is there a formula/table to work off?
     
  2. davesparks
    Offline

    davesparks Trusted Advisor

    Location:
    guildford
    It depends on the nature of the incoming supply and any special requirements from the DNO, what is the earthing system?

    I’m assuming it’s an LV intake here?
     
    • Agree Agree x 1
  3. LeeH
    Offline

    LeeH Insert witty monkey comment here. Electrician's Arms

    Location:
    Lincs
    Do you have a copy of that big yellow book?
     
  4. spinlondon
    Offline

    spinlondon Trusted Advisor

    Location:
    Harlow Essex
    Wait, how old is this post?
     
    • Like Like x 2
  5. wirepuller
    Offline

    wirepuller Trusted Advisor

    Location:
    south uk
    Have a butchers at the section in Bs7671 confusingly titled 'Main Bonding Conductors'. Might just tell you what you need to know!
     
    • Funny Funny x 1
  6. LeeH
    Offline

    LeeH Insert witty monkey comment here. Electrician's Arms

    Location:
    Lincs
    My bad :mamazed:

    It would have been close enough...
     
    • Like Like x 1
  7. Carl Knowles
    Offline

    Carl Knowles EF Member

    Location:
    Darwen
    Business Name:
    Elektec Ltd
    Thanks guys, im on page 171, table 54.8, guessing this might help!
     
  8. davesparks
    Offline

    davesparks Trusted Advisor

    Location:
    guildford
    Don’t guess as main bonding requirements are governed by more than just a table.

    For a start what is the earthing system and size of the earthing conductor?
     
  9. Carl Knowles
    Offline

    Carl Knowles EF Member

    Location:
    Darwen
    Business Name:
    Elektec Ltd
    Ill find out all this information when next on site and get it posted on here.

    Thanks for your help.
     
  10. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    Could be interesting if they turn out to be supplied from a private transformer:D
     
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