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  1. B

    voltage drop calculations

    I have been asked to connect up a mobile home on a large transportation site. The run of cable is approximately 250meters. In the regs book for 25mm armoured cable there are three values x y and z which one should I use
    • big willie
    • Thread
    • aus cable calculations electricians' talk large voltage voltage drop volts
    • Replies: 4
    • Forum: Australia
  2. W

    Bibliography about medium voltage systems

    Hello, new in this forum. I want to ask something. Because i am new in the field of photovoltaics and i know only about systems in low voltage ,i have done about 10 10kw systems only, i want to ask if there is any bibliography about large scale systems. I want specially a book with all technical...
  3. P

    Slightly high Zs on large ring circuit

    Hi all, I did a PIR yesterday at a largeish house (150m2). there is only 1 ring final circuit for all house sockets. Zs was 1.25ohms, vs 1.16 permitted maximum value. there is an RCD so additional protection in theory although the RCD did not disconnect at 5x 30 ma test. I will obviously...
  4. S

    pricing a large 3 bed re-wire.

    Evening lads. Most of my work in new build installation but i have been asked to price for the above job. Its a large 3 bed detatched house. its going to have an up and down stairs ring circuit (3/4 sockets in each bed, 1 socket in hall and another on landing, 6 twins in lounge). it will also...
    • seb77
    • Thread
    • aus downstairs electricians' talk kitchen large light pricing re-wire sockets
    • Replies: 2
    • Forum: Australia
  5. W

    Got large pv contract looking for teams, companies ,individuals for work nationwide

    hi guys just got large PV contract .work is nationwide if interested drop me a line stateing areas you cover if you are willing to travel . If your a company, team, or an individual as we will be taking on a few ourselves not sure of number yet tho will know by the end of the week get in...
  6. O

    Replacing downlighters - LARGE cutouts

    All One of my customers has about 24 downlighters in their kitchen/diner/utility. They all fitted in "large" dish type holders and some of these appear to be glued in. As you'll see from the photo they aren't that nice to look at. My question is, is there any other option, other than...
    • Octopus
    • Thread
    • aus downlighters electricians' talk large replacing
    • Replies: 6
    • Forum: Australia
  7. P

    For sale

    Solar pv company! niceic!real!mcs!obe!mbe! established july2011 new van tower scaffold large stock of various roof brackets large filling cabinet spare stickers 2 broken sanyo HIT240 SE10 panels ORDER BOOK FULL TIL MARCH 2012 CASH IN £50.00 NOTES (NOT BY COURIER) GRAB YOURSELF A BARGAIN:)
  8. ipf

    Large Complex

    Working on large shopping centres, airports, hospitals,etc. Smallish kitchen jobs replacing sub boards or installing final sub circuits from existing boards. Generally there is no chance whatsoever of access to obtain supply characteristics or particulars at origin. I usually get by adding a...
  9. S

    Main bonding in large industrial building

    hi, just looking for some help on how to install the main bonding on a large industrial building. Firstly the supply neutral to the building is over 150mm so am i correct thinking i need to use 50mm bonding conductors for water etc? Secondly the MET is about as fair away as possible on this...
    • sterandall
    • Thread
    • bonding building canada electricians' talk industrial large main main bonding
    • Replies: 35
    • Forum: Electrician Talk | All Countries
  10. C

    Large Domestic Field Installation

    I have decided to install a large PV system in my paddock next to my garden. I am aiming at 9.99kWp to make the best of FIT break points. Around 50 to 55 panels, by the rough sums I have done. All in one long row of about 45m, mounted at 30/40 degrees and facing due South. Will hopefully net...
    • colincase
    • Thread
    • domestic electricians' talk field installation large
    • Replies: 18
    • Forum: Domestic Electrician Forum
  11. H

    large shop with an rcd at the origin

    ......Set at 500ma. Now this supplies several dist boards serving quite a few circuits. My question is do I install individual rcds set at 30ma at every board or to reduce incovenience when a circuit trips do I put all circuits on rcbo's( think of the expense of over 100 circuits). A lot of...
    • hoover
    • Thread
    • aus circuits earth electricians' talk installation large origin rcd shop supply system
    • Replies: 22
    • Forum: Australia
  12. D

    Large load UFH

    Doing a kitchen job at the moment and as is the norm electric under tile heating has been specified throughout the tiled areas. Being a big area the load (about 4kW) is greater then the stat can handle so i'm going to have to fit a relay or contactor in line with the load. Firstly, does anyone...
    • Dunc
    • Thread
    • aus electricians' talk large load ufh
    • Replies: 6
    • Forum: Australia
  13. R

    SMEG large oven not heating

    Hi I wonder if anyone could shed some light on the cause of my SMEG DO4 SS-5 not heating up. The fan, internal light and clock are all on but just no heat. I have read that it maybe the , Thermostat, Cut- Out switch or heating element. I have the double oven and it is the large clock...
    • rai
    • Thread
    • aus electricians' talk element heating large oven probably
    • Replies: 19
    • Forum: Australia
  14. M

    Main Feed for 3 phase unit. What size cable would be best?

    I went looking at a job yesterday. It is going to be a commercial office block with 3 large offices with around 25 d/sockets in each. There is a large sub main in an adjacent building about 40 metres away. It is all going to separately metered . I am just aking your opinions on what size...
    • mgnelec09
    • Thread
    • 3 phase best building cable canada electricians' talk large main phase size unit
    • Replies: 6
    • Forum: Electrician Talk | All Countries
  15. B

    First job large install...help!

    I'm going to quote a job on Sat and although I have done the course and got the t shirt, I am nervous about the quote as it is a big install for my first job, a baptism of fire on a farm barn roof. If you could help me with any info about quoting for this type of install rather than a small...
  16. D

    Estimating labour and materials on large new build contracts

    Hi All My companys turnover has rapidy increased over the last 6 years and we have steadily grown from 2 ( buisness partners) to 25 sparks. We have been trading as a labour only subbie using the Lukins installation times guide and Excel to tender and win various contracts. The company we are...
    • danhod1
    • Thread
    • build contracts electricians' talk estimating labour large materials new new build
    • Replies: 9
    • Forum: Business Related
  17. L

    PIR pricing large school

    Hi all, Ive been asked to quote for PIR on a large school around 1000 circuits and been built 4 yrs only so this is first test. I presume original test sheets are available and access will be school holidays. Keen to do job to keep in with the firm in charge but know they have a quote of...
    • linsaband
    • Thread
    • aus electricians' talk large pir pricing school
    • Replies: 2
    • Forum: Australia
  18. P

    Individual PV installations vs. one large installation

    I have a question regarding the Feed-in tariff: We have looked at a potential project in an industrial estate on a total of five roofs with an overall capacity of 124 kWp. If the project is treated as one installation, the FiT would be 29.3 p. If each roof gets its own meter, is it possible...
  19. D

    Very LArge Cooker and Diversity

    Being looking at sizing Cable for a new Cooker . It is a Beast with a manufacturesrs spec of 17.4 KW. Was applying diversity to this ie 10amps plus 30% etc ( no 5 amp). Just got me thinking that after the diversity the answer is 29.7 Amps down from 75.6amps. Was diversity designed to allow...
  20. M

    Estimated output/SAP for large systems

    Does anyone know what the rules are regarding the estimated output? We're pricing a reasonably big job at the moment and saw a competitors kWh/kWp figures and none of them matched the figures you would obtain from using the actual proper SAP tables. Are there any guidelines you can follow. eg...
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