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
  • Locked Locked
  • Replies 20 replies
  • Subscribers 40 subscribers
  • Views 5338 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

BS7671 Amendment 2. Off-peak E7 consumer unit RCD and SPD.

Sparkingchip

Two new consumer units, peak and off-peak each remote from the intake with seventeen metre SWA distribution circuits.

The peak consumer unit will have Type A RCDs and a Surge Protection Device, is the off-peak consumer unit okay with a Type AC RCD and does it need another Surge Protection Device?

Andy.

Parents
  • 0

    Is is just me or are things getting so out of hand that electricity should be removed from domestic premises? Storage heater: electronics, OK so the electronics take 10mA, and of course they will have protection from mains "events", at this power level it is trivially cheap and the manufacturers warranty costs depends on it. RCD protection, there is no conceivable risk for additional protection of these circuits unless they are not installed correctly, you know the rules. I know that BS7671 is extremely unhelpful about these things and full of feature creep, but this is ridiculous. A type A RCD for an electronic circuit which might be able to leak 50 mA of DC if it suffers multiple failures? Pull the other one, the circuit does not need ANY RCD, the loads are Earthed and there is no access. 411.3.3

    I am looking at Amd 2, we are going mad.

Reply
  • 0

    Is is just me or are things getting so out of hand that electricity should be removed from domestic premises? Storage heater: electronics, OK so the electronics take 10mA, and of course they will have protection from mains "events", at this power level it is trivially cheap and the manufacturers warranty costs depends on it. RCD protection, there is no conceivable risk for additional protection of these circuits unless they are not installed correctly, you know the rules. I know that BS7671 is extremely unhelpful about these things and full of feature creep, but this is ridiculous. A type A RCD for an electronic circuit which might be able to leak 50 mA of DC if it suffers multiple failures? Pull the other one, the circuit does not need ANY RCD, the loads are Earthed and there is no access. 411.3.3

    I am looking at Amd 2, we are going mad.

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