The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

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 23 replies
  • Subscribers 31 subscribers
  • Views 4088 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

Cartridge Fuses in Domestic Fuse Boxes.

Zoomup
How many domestic fuse boxes have you come across within the last year that have B.S. 1361 cartridge fuses in them? I came across one today. You know the ones. The 5 Amp cartridge fuse is just a little shorter than a 5 Amp. 13 Amp.  plug fuse. The 15 Amp fuse is coloured blue, 20 Amp yellow and 30 Amp red. The shower fuse may have been 35/40 or 45 Amp. I seem to remember that the 45 Amp carrier was orange. I have an old Wylex carrier here that has a brown cartridge fuse carrier and an orange base. I was impressed years ago with a cartridge fuse maker's video advert. It said that when a fuse blows you fit a new unused cartridge fuse that affords great protection and reliability, unlike with a circuit breaker that after time and many operations may become unreliable. That impressed me at the time.


Z.
Parents
  • 0

    I may be correct in saying that they were compatible with 1mm cpc ring circuits, but MCBs are not



    My copy of the OSG would seem to agree!

     

    My customer cut through his electric lawnmower flex in the garden. He blew the 15 Amp blue cartridge fuse in his fuse box. He sought a replacement and found them at a local hardware shop. He had to buy two in a packet. The cost was just under a fiver.



    An advantage of the 13A plug system when supplied from a 30A fused circuit - the 13A (or lower) plug fuse should discriminate very nicely with the 30A circuit fuse, which in turn should discriminate nicely with a 60A (or higher) DNO fuse. The fashion for MCBs rather messed that up. Not all progress is an advancement.


      - Andy.

Reply
  • 0

    I may be correct in saying that they were compatible with 1mm cpc ring circuits, but MCBs are not



    My copy of the OSG would seem to agree!

     

    My customer cut through his electric lawnmower flex in the garden. He blew the 15 Amp blue cartridge fuse in his fuse box. He sought a replacement and found them at a local hardware shop. He had to buy two in a packet. The cost was just under a fiver.



    An advantage of the 13A plug system when supplied from a 30A fused circuit - the 13A (or lower) plug fuse should discriminate very nicely with the 30A circuit fuse, which in turn should discriminate nicely with a 60A (or higher) DNO fuse. The fashion for MCBs rather messed that up. Not all progress is an advancement.


      - 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