capacity | Page 3

capacity

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  1. S

    Emergency Lighting Central battery system design

    Hi All, I am new to this site so be gentle please.... My question is this... I have been to an existing job which has 55 slave EMLs throughout the building. We are experiencing volt drop on the longer routes with the LED fitting, approx 40 lights. The LED fittings start to strobe as they hit...
  2. HappyHippyDad

    BS3036 breaking capacity and PFC..

    Afternoon.... I have just completed an EICR and am unsure if the Wylex BS3036 fuses require a code due to their breaking capacity related to the PFC. Firstly I would like to identify if they are S1A, S2A or S4A as that would solve the problem of the PFC being 1.35kA, however I dont think its...
  3. V

    Current Carrying Capacity Cables

    Hello, I was just looking for some help with the above subject with looking up the tables for the various protective device and finding the values of C connected with CCCC. I was looking for the rating factor for a BS88 fuse and I found at least 2 different tables the difference being that there...
  4. S

    current carrying capacity

    dont have O.S.G with me can sombody tell me the ccc for 6mm t&e buried in walls (i think i remember its 47A ) am i right
  5. sparksburnout

    DNO's incoming capacity.

    Looking at a job where shower is required, and amongst all the other requirements, contacted the DNO to enquire what the incoming supply capacity is. The cut out fuse has no marking that states its rating, existing meter>CU tails are 16mm but will be using separate CU for shower circuit via...
  6. T

    Cable Current carrying capacity

    Why is it that the tables in the Regs for Cable current carrying capacities vary so much from that of a cable manufacturers data sheet, for example a table in the Regs book states a 240mm 4 core XLPE Armoured cable buried will carry 324 amps, but a data sheet for a leading manufacturer states...
  7. P

    Rated short circuit capacity of a BS88-3 type C fuse?

    What is the rated short-circuit capacity of a BS88-3 type C fuse? They are typically manufactured to 80kA but what does the BS say?
  8. M

    Breaking capacity

    Hi can anyone advise me. My company have installed a dimming rack ( from USA ) it's a 0-10 v dmx system . It's 3- phase and protected by 3- phase B 20 amp 60898 but on the dimmer rack it has 24 x C10 amp 60898 but they only have a breaking capacity of 3 KA my Pfc reading is 2.9 so it exceeds the...
  9. T

    Installed capacity of solar thermal panels

    How do you work out the Installed capacity of solar thermal panels? is it the aperture area x 0.7
  10. polo1

    Breaking capacity for MK LN 5905

    Hi, can anyone advise the breaking capacity for an old MK Sentry type 2 LN 5905 mcb - tried forum search and Google without success? Thanks in advance
  11. S

    Increase mcb capacity. Notifiable?

    Went to a house yesterday where the customer was complaining of a tripping fuse on the kitchen circuit. Got there and found the kitchen wired to a 20amp plug in MCB. The kitchen was not on a ring despite 2 wires being present in the board. I confirmed a break in the circuit but didn't resolve...
  12. M

    current carrying capacity

    can anyone help please, I am testing a new installation for another contractor, lighting circuits are wired in 1.5mm pvc singles in 4inch metal trunking, protected by 16amp type c mcbs, is this overated considering correction factors applied? thanks
  13. sparksburnout

    Breaking capacity question

    Apologies if this should be in a beginners section, but I can't seem to see one. Anyway here goes - I am having a bit of a mental battle regarding PSC and the breaking capacity of the protective device. Let's take a domestic setup as an example, with an 80A DNO fuse, BS1831 I think off top of my...
  14. N

    BS3036 Breaking Capacity

    I know this has been asked before but I can't locate a thread with a conclusive satisfactory answer... Got an old Memera 3 board (says it's to BS5486 Pt.13) with a mix of BS1361 cartridge and BS3036 rewireables. PFC is 2.03kA. Breaking capacity of BS3036 may be 1/2/4kA depending on type...
  15. G

    current carrying capacity

    Any reason why 6x1.5 mm singles within 20mm plastic cinduit on surface shouldnt be used for a 3kw load. Length if run is about 6 metres. Fused a 13a via sf spur. Thanks
  16. S

    Three Phase to Single phase Online UPS with a capacity of 15KV

    I want to build a three phase to single phase online UPS with a capacity of 15kv that can hold a backup for 15 minutes. Can anybody provide with specific circuit diagram, technical specification and stepwise instructions to do that? Thank you!
  17. K

    Relationship between Cut-Out Fuse & MCB PSCC

    Good morning all, Apologies if you have gone over this a number of times before (I have tried searching for a thread, and have found some that have touched on what I'm after but not quite explicitly enough). If the measured PFC is greater than 6ka (for example) with circuit-breakers' breaking...
  18. R

    fuse rating or setting

    Ive searched but cant find any info on the following- On the certs forms under main switch or circuit breaker it asks Fuse /device rating or setting??:santa_cheesy:
  19. Energetic

    Grid Capacity

    I had an interesting conversation with my local DNO planner a few weeks ago after i made an inquiry for a 30kWp barn system for a local farmer. It seems there's no export capacity left on the 11kV lines for a few miles around due to a solar farm not too far away, the most my client can have is...
  20. I

    Current Carrying Capacity of cables with different voltages

    Does the current carrying capacity of cables change on what voltage your using?? 2.5mm can carry 27a at 230v would this be the same for 1000v could someone please explaain this whole process please Confused lol Grant p.s i'm a student :)

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