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

  • State Helpful Answer
  • Locked Locked
  • Replies 2 replies
  • Subscribers 36 subscribers
  • Views 1083 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

80 Amps Fuse with 25mm2 Tails with 10mm2 Earth

amlec2021

I came across an installation with an 80 Amp fuse with 25mm2 Tails and 10mm2 Earth and ondered if there was a requirement to upgrade the 10mm2 Earth to 16mm2.

The 10mm2 Earth comes straight from the MET in the DNO cut-out and therefore I am unable to access this to remove the 10mm2 and replace with 16mm2.

Can anyone suggest a way to verify if the existing 10mm2 Earth is acceptable.

Many thanks

Parents
  • +1

    from the OSG (at least the old version I've got) - 5s disconnection time for a 80A BS 1361 fuse and a 10mm² c.p.c. is good provided Zs is ≤ 0.40Ω

      - Andy.

Reply
  • +1

    from the OSG (at least the old version I've got) - 5s disconnection time for a 80A BS 1361 fuse and a 10mm² c.p.c. is good provided Zs is ≤ 0.40Ω

      - Andy.

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