maths

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  1. Rockingit

    Motor maths - this makes no sense

    I've got a large USA artist music tour starting soon across Europe so we're having to sort out lots of reducer transformers etc, no big deal. But this has me stumped.... A USA manufacturer of a moving platform is requesting a 208v transformer @ 30A for the platform, but having doubled checked...
  2. W

    I need help with figuring out an equation

    Hello, I’m in dire need of help. here is the question A kitchen Ring final circuit is wired in 2.5/1.5mm T&E and protected by a 32A type B circuit breaker. 70m of cable has been used. Q1. What is the expected r1, r2, rn value ? So far I’ve used the equation R=Mohms/m X Length =1,365.7...
  3. electricwizard

    Electrical Installation Course & Maths

    Hello all, I have enrolled on an Electrical Installation Level 2 course. I've formerly worked in more academic fields, but I haven't used any sort of advanced mathematics in years, such as algebra, trigonometry, or transpositions in nearly a decade. I guess I'm asking for peace of mind as I am...
  4. Dan Carroll

    Volt drop maths

    Morning team Question about volt drop. I presume I am missing something here. So firstly the facts out the OSG. Table 7.1, page 66, lighting circuit, 6 amp, RCBO protection, 1.5mm cable. The max allowed length is stated as 106m. Using table F6 for the cable info, for 1.5mm cable the mV/A/m is...
  5. L

    New member with maths question

    New to the forum so hi everyone. I'm due to start an electrician course in July so I thought I'd revise some maths as it's been some years since I've done any. I bought the book 'Electrical installation calculations'. I've flown through resistors in series and parallel so far but have come up...
  6. spud1

    RCD protection maths?

    Hi all, My colleague and I were having a discussion today about RCD protection, as you do, and the reasoning behind why it is stipulated that 30mA should be the rating of an RCD for additional protection. Now we all know the rules regarding the maximum trip times for the various tests, but I...
  7. D

    Resistivity maths problem

    Hey all im just a bit confused with the formula for resistivity, i understand it until the text book gives an example whereupon the csa of cable goes from being 1.5mmsq (which i take to be 1.5 x 10 to -3M sq) to 1.5 x 10 to -6M sq which would make a csa of 1.5micrometeres would it not? Ive...
  8. O

    Edexcel Maths 2017 Exam - TODAY

    My daughter sat a maths GCSE paper today - she is a maths genius BUT the last question got her completely flummoxed... She tried explaining it to me .... and her mum but she was wasting her time This link adds a few thoughts: Edexcel Maths 2017 Exam Sparks Hilarious Twitter Reactions From...
  9. S

    Advice on taking a bold step please

    Hello. Its been a long time since I have been on the forum...I came here for some DIY advice and was I suppose I got the correct replies suggesting I dont touch ...get an electrician. I understand that. Im now here to ask how hard it is to BECOME a qualified electrician. I have decided to walk...
  10. Lee Gold

    What is the maths like being an electrician?

    Hello I am not very good at maths and was wondering what kind of maths do electricians use everyday?
  11. B

    HNC Building Services - Maths Skills Require Brushing Up!

    Hi everyone, First time poster but long time member who could use some friendly and helpful advice please. Basically I'm at that point in my career were I'd like to move higher up the ladder and after speaking to work colleagues I've been advised that a HNC/HND in Building Services Engineering...
  12. Rockingit

    IR Maths not adding up....

    Currently on site and getting very confusing IR results on an EICR...any suggestions welcome! TT @ 43.7 Ring with R1R2 values OK at around .5 as an average. IR value consistently .049 R1R2. Have SCOURED the place with the owner and no hidden sockets, spurs etc or neons. Voltage is 233, so by...
  13. N

    I need help with the Maths

    Hello All, I need some with the maths for the city and guilds 2330 electrotechnical certification for electricians level 2. The question is calculate the power required to raise 15 M3 of water per minute through a vertical distance of 35m. 1 litre of water has mass of 1kg. the mass of...
  14. D Skelton

    Electricians should know their maths full stop! Do you?

    Ok, so following on from darkwood's original thread on basic maths I thought I'd start a thread for people to add a few things that are a little more complex than basic multiplication and division. Nothing too hard but should still be easy peasy for any spark! I'll start with this: Make G...
  15. W

    Diversity calcs - need more copper my way, cant do the maths.....

    Alright there lads, Its been a little while since my last post ive been AWOL somewhat and been involved in other business. But now i have returned to the world of ball ache and once again, in need of some advice. I hope you are all well. i need to spend some time over the next few days trying...
  16. La Poste

    HNC maths bridging course

    Greetings. I have heard the maths bridging course mentioned quite a few times but I still don't know what it is. So has anyone a link or some guidance to the course number for the maths bridging course. I hope to eventually study an HNC later. Thanks.
  17. B

    Not electrical but I need some maths help.

    Trying to work out how much air M^3/min an airline will be releasing to atmosphere. I've searched google and can't really find a formula I can use without going massively in depth with it. I only want a fairly accurate rough answer. Can anyone help. Heres some information: The airline is...
  18. M

    Commercial EPC course - Day 1

    Having had to pay out way over £1000 plus VAT twice in recent months to get commercial EPC`s done I decided enough was enough and I would do the course myself. Started course today in Fleet Hants, very early this morning with only three of us on the course. Both of the others are Domestic Energy...
  19. B

    Maths in electrics

    Hi, im about to finish my level 2 course, ive just retook my maths gcse and i have a D at the moment so if i don't get a C im not sure what happens. I understand most colleges require a C Or above for level 3 without an apprenticeship but if i got an apprenticeship with a company would colleges...
    • Bill44
    • Thread
    • electric electrical electrics maths
    • Replies: 20
    • Forum: UK Electrical Forum
  20. S

    what maths level

    Hello all. I was wondering how much importance is placed on Maths when training to become an Electrician. Its something I have often considered but have always been put off because maths is not my strong point. Please advise Thank you

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