tables

tables

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  1. littlespark

    Help with tables and graphs please

    I would ask my daughter, but she’s on study leave for exams. Basically I want a graph that will compare readings from 3 different electric meters. I want to graph the difference between each reading, not a gradually increasing line. I’m trying to compare what my hot tub consumes, compared...
  2. Rockingit

    Tables for SWA armour cpc?

    In a former life on another forum as well as this one.... there were a whole heap of downloads that people had done as ready-reckoners for things like Cu eq for various armour sizes, R1R2 values on lengths.. useful stuff. I think I might even have generated some myself. Anyone have any...
  3. haptism

    BS 1361 50A ZS

    Anyone know the ZS for an 1361 or BS 88-3 50A fuse. All the tables I find have n/a. I phoned the maker and was told there are no listed ZS' for a 50A and to take the difference between the next closest sizes (45A & 60), surley thats not proportional ?
  4. T

    software for mapping electrical (commercial) installation

    Anyone know of software to produce schematics of distribution boards and circuits plus sub mains etc.?
  5. N

    British standards and tables

    Is there a reason that the tables in 7671, don't reference the standards for cables. The cables are embossed with the standard it would be much easier if the table referenced the bs numbers it applied to. I know it's not difficult to work out but it leaves it open to interpretation.
  6. B

    Bonding Stainless Steel Tables In A Kitchen

    Wiring for a new kitchen,client is having all new stainless steel tables,have these all got to be bonded.If yes what size earth cable do you suggest. Regards
  7. D

    Voltage drop tables...

    Just a quick one folk. Do the voltage drop tables in the BGB apply for ELV systems? I'm converting my van to a camper so I'd adding 12v circuits for lighting, water pump etc. It's all going to be run in 3183Y flexible cable, can I use the VD values per mA/m in the regs, the same way as I...
  8. M

    bs7671 , guidance notes 3 amendmant 3 tables wrong?

    looking at zs readings for type b bs60898 circuit breakers in bs7671 "page58" and looking at page 121 in the guidance notes 3 and seeing different readings??
  9. Richard Burns

    AMD 3 Zs tables and GN3 and OSG corrected tables

    For reference these are the Zs tables from BS7671 Amendment 3, provided by Amberleaf. I have cleaned up the scans a bit which is why they may look a bit odd round the edges. Remember IET have also issued the corrected tables for the latest GN3 page 121 table A4 and OSG table B6 which are...
  10. P

    Volt drop question

    Hi everyone, I am intending on working in the uk shortly, i am from ireland and dont have the uk regs presently. I am trying to prepare for the exmas i will face and the cable calculations/volt drop calculations are something i cannot remember doing here in ireland in my college time so my...
  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. 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...
  13. S

    New Guide Tables Help

    Just doing a quote from the new guide, wondering were you find the tables for beyond 45 degrees of South any help greatly appriciated. I have a job we are looking at slightly South of West ie 248 degrees or 68 degrees past South Any help greatly appriciated
  14. Baker1988

    voltage drop calculations

    hi was wondering what every ones opinions are regarding volt drop calculations i know there are 2 ways the ohms law way and the way where you use tables of the bs7671, the thing is i taught my self how to do volt drop calcs so i learnt the ohms law way is this a acceptable way or should i do it...
  15. O

    Confused by cable selection tables.

    Studying the Electricians and On Site Guide tables (for my Domestic Electricians course with OLCI) and the cable sizes all have double entries in the tables 4.1.1, 4.1.2, 4.1.3. That is the Cable csa for different circuits show 2.5/1.5, 6/2.5 etc. I understand the need for different csa for...
  16. jimbo81

    osg tables

    HI there this is my first post. im sitting my ACA soon and found all your posts very helpfull. Im having a few probs tho. When doing your ze if its 3ph do you test each and take highest result or an average or do you just test one phase and where is the table in the osg i compare the results...
  17. F

    pscc pfc tables

    can any one tell me what table or page in reqs for max values for pscc or pfc
  18. C

    Zs and resistance tables for you

    Thought you might like a copy of this. Print it out, encapsulate it and stick it in with your test meters
  19. S

    Bonding of commercial catering equipment

    Just wondering what your thoughts are on this, have seen it done in a variety of ways, and the lads at work all have different ways of doing it, e.g. daisy chain from main bond to the gas pipe around each piece of equipment, another way to put earth straps at various points along the gas...
  20. B

    Commercial kitchen bonding

    I cant work out what needs to be bonded in a commercial kitchen. Commercial kitchens have lots of free standing metal work tops & work benches, so do these need to be cross bonded and have a earth taken back to the DB? Also for the sinks in commercial kitchens do they need bonding? I cant seem...

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