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 11 replies
  • Subscribers 32 subscribers
  • Views 973 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

Terminal blocks - no fusing down?

M. Joshi

Whenever transitioning from a preceding supply cable protected by a higher current circuit breaker or fuse, I always fuse down before connecting the appropriate lower gauge wire.

 

What I wonder is then how such distribution blocks like these Weidmüller AWPD 35 4X6/6X2.5 are safe:

 

336b015b6f6025bb0464050c14dff2fc-huge-weidmuller-awpd-35-4x6-6x2-5.png
35mm² to 2.5mm²
Parents
  • Former Community Member
    0 Former Community Member

    What I wonder is then how such distribution blocks like these Weidmüller AWPD 35 4X6/6X2.5 are safe:

    They don't appear to be any different to thousands of bus-bar chambers at 400 A with 16 mm2 cable off the bar to the switch-fuse adjacent.

    They rely on the integrity of the installer to provide a suitable protective device on the outgoing circuit.

    Or, if you're looking at DNO world, there may be a 300 mm2 cable backed up with a 400 A fuse with 35 mm2 connected to it! The cable is protected from overload by the 80 A fuse in your cut-out (see 433.2).

    Regards

    BOD

Reply
  • Former Community Member
    0 Former Community Member

    What I wonder is then how such distribution blocks like these Weidmüller AWPD 35 4X6/6X2.5 are safe:

    They don't appear to be any different to thousands of bus-bar chambers at 400 A with 16 mm2 cable off the bar to the switch-fuse adjacent.

    They rely on the integrity of the installer to provide a suitable protective device on the outgoing circuit.

    Or, if you're looking at DNO world, there may be a 300 mm2 cable backed up with a 400 A fuse with 35 mm2 connected to it! The cable is protected from overload by the 80 A fuse in your cut-out (see 433.2).

    Regards

    BOD

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