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  1. C

    Has anyone got an amended table for the new zs readings for BS60898 and BS3871

    Hi all still feeling new to this game even after 5 years or so Going through a test and having trouble with finding the max zs readings FOR bs3871 breakers I know I can just multiply the old ones by 0.95, but was hoping someone had kindly already done a table with amended readings. I also...
  2. J

    Voltage drop for fp200

    Hi, Am running a radial power circuit in 4mm fp200 with a 20A rcbo but am a bit worried about the voltage drop. I have a 70M run clipped direct and by my calculations I will need to go to 6mm. I am using table 4d2 but don't know if there is a table for fp200.
  3. L

    max zs table in the osg

    Hi all sorry for this silly question but i cant seem to find the max Zs table for a 10A BS88-2 Fusein the osg. I can find it in the BGB table 41.4 10A = 7.19 ohms and i know to multiply it by 0.8 (7.19 x 0.8 = 5.75) for rule of thumb but i would like to find the right table in the osg
  4. N

    10.5kW Shower Cable Size

    Hi all, Would a 10.5kW Shower require 10mm or 16mm twin and earth? I've been doing cable calculations at college and im not 100%. Cable Length = 20m Protective Device = 50A Wiring method = Above plasterboard ceiling not exceeding 100mm insulation I belive 10mm is sufficient but my calcs...
  5. beatboaby924y

    61009 rcbo max zs 1667ohms?

    Doing some testing today and came across something I was hoping to get cleared up. The maz zs of a c type 16amp 61009 is 1.44 ohms on table 41.3 however on table 41.5 it states that a 30ma 61009 under 32amp can have max zs of 1667ohms. Would you write on test sheet maz zs 1667 ohms and...
  6. O

    Another scam??

    Got this today by email: Congratulations xxxxx. You've got it. Your Business We've been told you've got what it takes to become a Which? Trusted Trader. Dear xxxxxx, We're delighted to let you know that our members have recommended xxxxxxxxxxx to join our Which...
    • Octopus
    • Thread
    • another click image scam table
    • Replies: 1
    • Forum: Business Related
  7. telectrix

    2394/5

    anyone within reach of stoke-on-trent, this might be of interest: Inspection & Testing Saturday Course Rebus Training Ltd ([email protected] Inspection & Testing Saturday Course!!! View this email in your browser Inspection and Testing...
  8. HappyHippyDad

    Why the 0.1 sec to 5 sec in table next to Fig 3A4?

    I was hoping someone would give me an idea of what the 0.1 sec - 5 sec referrs to in the table to the right of Fig 3A4 (BS7671). Any Fault current that exceeds the straight line I thought meant instantaneous disconnection? (i.e 0.1 sec (probably faster)), but the table infers that it could be...
  9. spud1

    Which Max EFL table to use for a BS EN 60947-3 MCCB?

    Hi which maximum permitted EFL table should I use for a BS EN 60947-3 MCCB? Is it table 41.3 BS7671?
  10. K

    D curve breaker

    I have been asked by a customer to solve a problem, he has a 3 phase 20A D curve breaker supplying 3 single phase breakers 2 x 6A and 1 x 2A. The 6A breakers are supplying 2 pumps with a load of about 4A each. When 1 of the pumps are turned on, the 20A trips. Any ideas why? The earth loop...
    • kzzam
    • Thread
    • breaker breakers cable problem pumps table
    • Replies: 13
    • Forum: UK Electrical Forum
  11. A

    Volt drop tables for LSF T&E

    Which table do you use in BS7671 for volt drop for LSF Twin and Earth? There does not appear to be a table for LSF cable. 4D5 refers to the grey PVC cable and is not the right one to use for the white LSF. Any help would be appreciated.
  12. J

    3 phase supply size

    Hi all, I need to put in a 3 phase supply for a piece of equipment in a commercial unit. They've sent the spec sheet for the item over and all it says is Current type (Ph/V/Hz): 3/420/50 Power rating (kW): 7.8 I just want to clarify if it's 7.8kW per phase or 7.8kW total over all...
    • James sparks
    • Thread
    • 3 phase class phase size supply table
    • Replies: 50
    • Forum: UK Electrical Forum
  13. M

    Max number sockets

    Is 5amp sockets classed same as light fixture. As in 100w each and max 13 per 6 amp. Cheers
    • midgetman
    • Thread
    • circuit lights max number socket sockets table
    • Replies: 5
    • Forum: UK Electrical Forum
  14. S

    Recommended periodic testing on factories

    How many years should be recommended on a industrial factory. And is there a bs number for this
  15. T

    Table lamp idea

    Hi guys, hope all had a good christmas. After seeing a piece of driftwood made into a very nice table lamp as a christmas gift it has given me the idea to make a few myself as a hobby and maybe sell them locally. I live very close to the sea and am sure to be able to source plenty of driftwood...
    • tbs1983
    • Thread
    • lamp lighting lights table table lamp
    • Replies: 8
    • Forum: UK Electrical Forum
  16. gnuuser

    sorry but it doesnt put food on the table

    boy what some people would do to avoid paying! had a young ouple who needed a circuit run to their kitchen for custom lighting and it wasn't a big or expensive job. anyhow ran the wiring, installed the switches, and mounted the lights! tested everything, and cleaned up when i presented the bill...
  17. S

    Which table?

    Hi guys, We have recently had some work done by contractors at our building. Double socket in an office, fed in 2.5 FP200, on a 32a MCB. First question is I wanted to look at the current carrying capacity for FP200 but wasn't 100% which table it is. Is it classed as mineral? Making it 4G1A...
  18. G

    Table Lamp - No markings with no earth

    PAT testing table lamps. There is no CE or Class II mark (in fact no markings of any type). Opened up the plug to check the fuse and found no E just L/N. Ran an IR test anyway which they passed, as did the plugs/fittings etc. They are not SELV as take a standard bulb and no transformer...
  19. M

    Fault table saw Advice needed

    In the Workshop we have table saw which sometimes doesn't start just hums and you need to start the with a bit of wood, I have only just started with them and they asked if it could be fixed for me its a capacitor problem but i don't want to say order a new capacitor and it will it work in-case...
    • Maestro
    • Thread
    • advice capacitor fault ideas needed start table table saw
    • Replies: 3
    • Forum: UK Electrical Forum
  20. R

    Onsite guide

    Hey guys i was looking at, the onsite guide and the tables with in it and I am finding them a little confusing to read/interperet. Can someone clarify this for me? Specifically table 7.1(i) the installation methods i can't seem to find them in the bs 7671 regs book, or they dont match up in both...
    • Ronald
    • Thread
    • guide installation methods onsite other table tables
    • Replies: 4
    • Forum: UK Electrical Forum

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