Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Replies 11 replies
  • Subscribers 31 subscribers
  • Views 677 views
  • Users 0 members are here
Options
You may also be interested in

External lighting columns - earthing conductor (reg 714.411.203)

Apostolos

Good afternoon

Sorry for the back to back question about external lighting

Based on regulation 714.411.203:

'Where street furniture is connected directly to a distributor's PME network, the earthing conductor and any main protective bonding conductors to any extraneous-conductive parts shall have a minimum copper equivalent CSA of 6mm2 for PEN conductors of the supply with copper equivalent CSA up to 10mm2. For larger sized neutral conductors, the main bonding shall comply with Table 54.8.'

If I have lighting columns at the back of a building and I am feeding them from inside the building, and the building system is a PME system, does this apply?

Its wording confuses me really because it says about connection directly to a DNO PME network....

Parents
  • 0

    Although given the recent changes to 411.3.1.2 (main bonding now only required within buildings) - 714.411.203 & 714.411.3.1.2 might be due a bit of a re-think...

       - Andy.

  • 0 in reply to AJJewsbury
    AJJewsbury said:
    Although given the recent changes to 411.3.1.2 (main bonding now only required within buildings) - 714.411.203 & 714.411.3.1.2 might be due a bit of a re-think...

    Not sure what you're getting at Andy? 714.411.203 says "any main protective bonding conductors" (doesn't say there has to be some, just any if you have them) ... Just because BS 7671 doesn't mandate main bonding doesn't mean someone hasn't decided to provide them, but if you do, the sizing requirements are there.

    Similarly, 714.411.3.1.2 supports the concept "need not be ..." - it all lines up, and provides clarity to an often-asked question?

    or ... have you noted something else?

Reply
  • 0 in reply to AJJewsbury
    AJJewsbury said:
    Although given the recent changes to 411.3.1.2 (main bonding now only required within buildings) - 714.411.203 & 714.411.3.1.2 might be due a bit of a re-think...

    Not sure what you're getting at Andy? 714.411.203 says "any main protective bonding conductors" (doesn't say there has to be some, just any if you have them) ... Just because BS 7671 doesn't mandate main bonding doesn't mean someone hasn't decided to provide them, but if you do, the sizing requirements are there.

    Similarly, 714.411.3.1.2 supports the concept "need not be ..." - it all lines up, and provides clarity to an often-asked question?

    or ... have you noted something else?

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines