breakers

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  1. J

    Air circuit breakers

    I have following air circuit breakers for sale used only 1 time for a project Brand - SOSUL MFGD - 2011.11.17 Origin - KOREA Rating - 630A Model - VL - 12E20B06 Brand - ABB MFGD - 2009 Origin - Italy Rating - 630A Model - Brand - ELATEC MFGD - 1999 Origin - German Rating - 800A Model -...
  2. Torcikas

    Cables, Rcbo's, old breakers

    Hey moving out in few month, selling all my stuff. So i have twin and earth 1.5/2.5 like 200-300 meters each, 3 core few hundred. Rcbos B6/16/20/32/40 amps. And like 100 or more old circuit breakers and rcb. Aswell some mains I think, earthing 10/16 mm/ bars sockets switches and etc. I can sell...
  3. J

    Understanding breakers and RCD, un-vented cylinders

    Hi I'm a Plumber and heating engineer and a new member to your forum. I have a basic knowledge of electrics but I'm curious about how breakers and Rcd's work and whether they prevent fires. My basic understanding is the breaker trips if more power is been drawn than is safe and an RCD...
  4. A

    Rewire and circuit breakers

    Hi guys, Hoping someone would be able to help with this one. My grans house still has the good old fuse box with fuse wire which I am aware could do with upgrading to a proper circuit breaker panel. However I have no idea on how much it would cost her and hoping someone would be able to give...
    • Ajfaccini
    • Thread
    • breakers circuit circuit breakers rewire
    • Replies: 14
    • Forum: UK Electrical Forum
  5. stephen atherton

    Range Oven Tripping Circuit Breakers

    We just had a range oven fitted (gas on hob with two electric ovens - total power rated at 5.3Kw) so a 32Amp mcb is in the board on the dedicated cooker circuit which was there from previous cooker. When one oven is on everything works fine, but when both ovens are switched on together they trip...
  6. astormatt

    MCB or MCCB?

    Afternoon all Hopefully someone can throw some light on a small problem i have. I am currently on a job, carrying out an eicr on a building and i am confused by the ocpd feeding it...... The set up is, main cut out in the sports hall building, then there are 5 circuits fed from the 200a main...
  7. D

    1.5mm clipped to ceiling supplied on 20A breaker

    Morning fellas On job at moment. Am just looking at lighting circuits. They are supplied off 20A type C breakers run in 2.5mm to MDB's then from there each lighting circuit goes down to 1.5mm flex 5 core with 2 cores being used for dali. From what I see cable rating is 20A is a 20A breaker to...
    • DaveS
    • Thread
    • being breaker breakers cable ceiling circuit clipped supplied
    • Replies: 16
    • Forum: UK Electrical Forum
  8. D

    Circuit Breakers

    Was just looking at circuit breaker types and I was a little bit confused so wondered if anyone could help clear it up. Basically say If I determined my current would be 26a before taking into account any rating factors and chosen a 32a circuit breaker for my protective device. After taking...
  9. H

    2 Rcd's?

    I'm thinking of having a new fuseboard fitted. The existing one has 8 fuse in it and is boxed in. The 2 electricians who have come to quotesay i need a board with A main switch 2 Rcds and 8 circuit breakers. the board will not fit in the boxing. My friend has a board with 1Rcd and eight circuit...
    • HorridToe
    • Thread
    • breakers circuit rcbo's rcd's
    • Replies: 9
    • Forum: UK Electrical Forum
  10. D

    Circuit Breakers Not Breaking!

    help! I've just tried doing what I thought was a simple replacement of a plug fascia as the old one got covered in paint during some decorating. Turned off the power at the breaker, ensured the circuits were dead, removed the old plug front, wired in the new plug and replaced the fascia back...
    • DomW
    • Thread
    • breaker breakers breaking circuit circuit breakers
    • Replies: 7
    • Forum: UK Electrical Forum
  11. D

    Removing MEM breakers

    Hi folks, Well today I attended another house to perform a bathroom upgrade. Upon visiting the mains board I noticed it was a MEM. Not ideal I thought as my previous experience taught me that RCBOs were not possible with these mcbs. I then noticed that a previous spark had fitted a hager RCBO...
  12. T

    Removing Schneider/ merlin geran Circuit breakers from panel board busbar

    Hi I am replacing 2 circuit breakers in a Schneider panel board. Board is 3 phase and main switch is Schneider NSX 100. Circuit breakers are Schneider NS100N compact series. Replacing 30 amp breakers with 63 amp identical units. The breakers are single phase units. my problem is that I am having...
    • timmy123
    • Thread
    • board breaker breakers busbar circuit circuit breakers merlin panel removing schneider
    • Replies: 1
    • Forum: Talk Electrician Forum
  13. A

    Design current and circuit breakers

    Hello, I have a problem with design current (Ib) and selection of the circuit breaker (In). If I have a circuit of 7A and I apply no diversity, then Ib = 7A and I select a 10A circuit breaker. But if I apply diversity and I get, say, 5A, is 5A now the design current Ib? So can I select a 6A...
  14. M

    B type breakers with in line UPS

    Hi I'm hoping that someone can help. I am adapting some circuits which are supplied via an in line ups. At present, the ups supplies a 72 way db and the final circuits are supplied from the DB. This is a laboratory research environment and it is expensive (about £20k a time) when they...
  15. 1capybara

    Table 41.3 Max earth fault loop impedence (Zs)

    The heading of table 41.3 says it shows " max earth fault loop impedance Zs for Circuits Breakers..... giving compliance with 0.4s disconnnect time of 411.3.2.2 and 5s disconnnect time of 411.3.2.3." 411.3.2.2 is for final circuits not exceeding 32A. 411.3.2.3 is for distribution circuits and...
  16. A

    2.5mm2 ring main protected by 20amp breakers

    So an old colleague of mine stipulates that ring main should be protected by 20 amp breakers. Why you ask? Well he said because a piece of 2.5mm2 can only take circa 26 amps and if the ring main broke at any point it would effectively make it two radials, and it would be protected by a 32 amp...
    • atm84
    • Thread
    • breaker breakers main protected radials ring ring main
    • Replies: 31
    • Forum: UK Electrical Forum
  17. 1capybara

    Who makes this: type B, TP+N panels for DIN rail breakers and dual RCDs ?

    Who makes a TP+N panel, bigger than a consumer unit, for example, 14-way (with space for 12 or 14 three-phase breakers). It should feed its outgoing breakers using bus bars, not wires. (I call this a Type B panel) And it should be usable for Dual RCDs, one for the left side of the panel and one...
  18. J

    d type breakers needing a low zs

    im a 1st year apprentice thats why im asking this question, from what ive gathered the higher the current it takes to trip as in 10 times the rated current etc... for that you need a lower zs than if it was a b type why is that? my thoughts on it is that becuase you have a higher current so...
    • Jake1579
    • Thread
    • breaker breakers circuit current higher lower times type
    • Replies: 3
    • Forum: UK Electrical Forum
  19. E

    Ring supplied from two circuit breakers

    Hello guys, hope someone can help me with this. i was carrying out a small job on a ring main (re-fix a socket to a wall nothing major), and noticed that the ring was being supplied from more than one circuit breaker a long with the other ring main in the flat. Obviously i rectified the job as...
  20. M

    MEM circuit breakers

    Have 1200 MEM breakers for sale if anyone interested PM me, bought job lot all brand new I don't use them but may as well go to a good home

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