Mylady Posted April 10, 2013 Share Posted April 10, 2013 Hi All Hubby is currently doing his electrical contractors licence, tough and confusing. Has anyone done it and do u have a sample of the maximum Demand project assignment.... Anything to guide wud be helpful Thanks in advance. 1 Quote Link to comment Share on other sites More sharing options...
colinmaclec Posted April 10, 2013 Share Posted April 10, 2013 (edited) Will be the similar to the one we do at the boat people course i believe. There is a large section at the back of the regs book about maximum demand and it tells you the load values for each item group which you split across the 3 phases in to circuits and then you get the total load and select the smallest mains cable you can get away with allowing for volt drop ( yes really must be an ozzie thing!! I would have been struck off for that in the UK!) Pretty straightforward stuff really and pretty much the same as the UK. Edited April 10, 2013 by colinmaclec 1 Quote Link to comment Share on other sites More sharing options...
Suspect Device Posted April 10, 2013 Share Posted April 10, 2013 Did my contractors ticket about 5 years ago, I still have all the project works on file. That said, they were relevant to the regs then, and the figures would be different today. PM me your email and I'll send you what I have. Once you've done your ticket, there is some good software by a company call Spearhead (google it), that does all your max demand and cable sizing. 1 Quote Link to comment Share on other sites More sharing options...
Mylady Posted April 11, 2013 Author Share Posted April 11, 2013 Did my contractors ticket about 5 years ago, I still have all the project works on file. That said, they were relevant to the regs then, and the figures would be different today. PM me your email and I'll send you what I have.Once you've done your ticket, there is some good software by a company call Spearhead (google it), that does all your max demand and cable sizing. Hi Have sent u a private message,looking forward to hearing from u.... Thank u 1 Quote Link to comment Share on other sites More sharing options...
kpp1 Posted May 21, 2013 Share Posted May 21, 2013 Hi There, How did you hubby go? Im currently struggling with the same assignment. Did you get any notes or help? 1 Quote Link to comment Share on other sites More sharing options...
elect42 Posted December 4, 2013 Share Posted December 4, 2013 Hi all Could I get an sample completed of this assignment please. I am also getting it tough to complete, it might not be the same but all I need is guidance and a bit more direction. Anything would be greatly appreciated. 1 Quote Link to comment Share on other sites More sharing options...
kpp1 Posted December 9, 2013 Share Posted December 9, 2013 hi mate, send me your email address and ill send you what i have. 1 Quote Link to comment Share on other sites More sharing options...
Doc 53 Posted December 9, 2013 Share Posted December 9, 2013 (edited) Will be the similar to the one we do at the boat people course i believe. There is a large section at the back of the regs book about maximum demand and it tells you the load values for each item group which you split across the 3 phases in to circuits and then you get the total load and select the smallest mains cable you can get away with allowing for volt drop ( yes really must be an ozzie thing!! I would have been struck off for that in the UK!) Pretty straightforward stuff really and pretty much the same as the UK. Not correct I am afraid. You also need to account for earth fault loop impedance and its effect on tripping times and co-ordination between breakers. The best method for understanding cable calculations is spreadsheets, Microsoft office being the most used (although the stuff on Linux that is free is just as good). In the real world full sequence for cable sizing should be: - max demand for DB (using AS 3000 is fine for basic sites, custom calculation is required for complex projects. The later allows the use of diversities to establish load profiles between major load groups). You need to make sure here motor inrush etc to co-ordinate with breaker setting. - dearate cables for ambient temperature, installation method, grouping of load carrying circuits and cable type. - apply cable length to confirm volt drop - apply cable length to calculate adult level at end of cable. Use this value to establish tripping within AS3000 rules, and protection co-ordintates. At this point you may need to use a larger breaker than the required load, to achieve co-ordination/discrimination. This may result in larger cables being required. - confirm cable size meets requirement of the a diabetic equation for withstand of temperature rise during fault condition, at origin of cable. Sound familiar? It should, AS 3008 (cable selection) directly aligns with IEC60364 (international standard for electrical installation in buildings) which also aligns with BSEN7671 (requirements for Electrical installations). unsurprisingly any major installations will be carried out in computer software like powercad/cable calc/powerpak. Be warned all have short comings! Edited December 9, 2013 by Doc 53 1 Quote Link to comment Share on other sites More sharing options...
elect42 Posted December 10, 2013 Share Posted December 10, 2013 hi mate,send me your email address and ill send you what i have. Hi mate did you recieve my email address when you have time any information will be a great help in completing this! 1 Quote Link to comment Share on other sites More sharing options...
colinmaclec Posted December 10, 2013 Share Posted December 10, 2013 Not correct I am afraid. You also need to account for earth fault loop impedance and its effect on tripping times and co-ordination between breakers. The best method for understanding cable calculations is spreadsheets, Microsoft office being the most used (although the stuff on Linux that is free is just as good). In the real world full sequence for cable sizing should be: - max demand for DB (using AS 3000 is fine for basic sites, custom calculation is required for complex projects. The later allows the use of diversities to establish load profiles between major load groups). You need to make sure here motor inrush etc to co-ordinate with breaker setting. - dearate cables for ambient temperature, installation method, grouping of load carrying circuits and cable type. - apply cable length to confirm volt drop - apply cable length to calculate adult level at end of cable. Use this value to establish tripping within AS3000 rules, and protection co-ordintates. At this point you may need to use a larger breaker than the required load, to achieve co-ordination/discrimination. This may result in larger cables being required. - confirm cable size meets requirement of the a diabetic equation for withstand of temperature rise during fault condition, at origin of cable. Sound familiar? It should, AS 3008 (cable selection) directly aligns with IEC60364 (international standard for electrical installation in buildings) which also aligns with BSEN7671 (requirements for Electrical installations). unsurprisingly any major installations will be carried out in computer software like powercad/cable calc/powerpak. Be warned all have short comings! I was not talking about the real world large projects that are done by electrical engineers, but I was referring to the small project they have to do as the final part of the electrical contractors course which is nowhere near as involved as what you are talking about. 1 Quote Link to comment Share on other sites More sharing options...
shady101 Posted January 29, 2014 Share Posted January 29, 2014 HI all I have just sat my Electrical contractors license. I have completed the maxium demand assignment and recieved it back with some small errors i have to fix up. there are a couple of things i don't understand what i have done wrong and i cant read all his writing or abrevations he's used. when i rang the tutor so they explain where i went wrong the reception basicly said if i dont understand i would have to sit the course again. I understand the course perfectly well, i just don't understand the problem he has with the assigment i presented and his abbrevations . Has any1 got a copy of their old assingment they could please send me so i can see where i have gone wrong. It would be a life saver Thank you for any help it would be much appreciated 1 Quote Link to comment Share on other sites More sharing options...
shady101 Posted January 29, 2014 Share Posted January 29, 2014 HI all I have just sat my Electrical contractors license. I have completed the maxium demand assignment and recieved it back with some small errors i have to fix up. there are a couple of things i don't understand what i have done wrong and i cant read all his writing or abrevations he's used. when i rang the tutor so they explain where i went wrong the reception basicly said if i dont understand i would have to sit the course again. I understand the course perfectly well, i just don't understand the problem he has with the assigment i presented and his abbrevations . Has any1 got a copy of their old assingment they could please send me so i can see where i have gone wrong. It would be a life saver Thank you for any help it would be much appreciated 1 Quote Link to comment Share on other sites More sharing options...
slavko Posted March 6, 2014 Share Posted March 6, 2014 Hi my name steven im a sparky sitting my electrical contractors course, im having problems with maxium demand project any chance you could forward ur assignment for reference. I will not copy it, I urgently need help I would be very grateful. Thank you 1 Quote Link to comment Share on other sites More sharing options...
Gray1990 Posted June 16, 2014 Share Posted June 16, 2014 Hey all, basically I'm just after an assignment to use as a template. I've got blank page syndrome and really need help with this assignment. Willing to pay $$$, let me know. Thanks all 1 Quote Link to comment Share on other sites More sharing options...
esperance Posted July 27, 2014 Share Posted July 27, 2014 hi there i did my contractors license about 6 years ago i will have look for it but eventually i did pass it correctly i am told that it is the same assignment for all wa contractors the maximum demand assignment was for shopping centre i believe. never used the contractors ticket as the job i have now does not require one but have the assignment stashed away somewhere 1 Quote Link to comment Share on other sites More sharing options...
Gray1990 Posted July 28, 2014 Share Posted July 28, 2014 Mate if you could find it that would be a big help. I've finished most of it but still struggling with the meter connection diagrams and similar diagrams. Also how's work in experience for sparkys? I spend all my holidays there but never really managed to find any work 1 Quote Link to comment Share on other sites More sharing options...
tomm99 Posted October 15, 2014 Share Posted October 15, 2014 Hey guys having trouble with the contractors assignment just seeing if any one could give us a hand willing to pay $$ thanks tom 1 Quote Link to comment Share on other sites More sharing options...
rogerdesa Posted February 23, 2015 Share Posted February 23, 2015 hi there please send me that completed sample I am having difficulty.anything would be greatly appreciated. 1 Quote Link to comment Share on other sites More sharing options...
Gaz125 Posted March 5, 2015 Share Posted March 5, 2015 (edited) ... Edited March 5, 2015 by Gaz125 1 Quote Link to comment Share on other sites More sharing options...
Gaz125 Posted March 5, 2015 Share Posted March 5, 2015 hi there i did my contractors license about 6 years ago i will have look for it but eventually i did pass it correctly i am told that it is the same assignment for all wa contractors the maximum demand assignment was for shopping centre i believe. never used the contractors ticket as the job i have now does not require one but have the assignment stashed away somewhere Hi mate any chance you could e mail the info on the max demand assignment , would be great if ya could as I am struggling to get going here and any information would be great thank you 1 Quote Link to comment Share on other sites More sharing options...
Gaz125 Posted March 5, 2015 Share Posted March 5, 2015 hi there please send me that completed sample I am having difficulty.anything would be greatly appreciated. hi mate did you get the info by any chance ? Would be great if you could forward it on if ya did 1 Quote Link to comment Share on other sites More sharing options...
Gaz125 Posted March 5, 2015 Share Posted March 5, 2015 HI allI have just sat my Electrical contractors license. I have completed the maxium demand assignment and recieved it back with some small errors i have to fix up. there are a couple of things i don't understand what i have done wrong and i cant read all his writing or abrevations he's used. when i rang the tutor so they explain where i went wrong the reception basicly said if i dont understand i would have to sit the course again. I understand the course perfectly well, i just don't understand the problem he has with the assigment i presented and his abbrevations . Has any1 got a copy of their old assingment they could please send me so i can see where i have gone wrong. It would be a life saver Thank you for any help it would be much appreciated hi there , just wondering did you get the info you needed for the max demand assignment ? Would be great if ya could forward it on if ha did .. Cheers 1 Quote Link to comment Share on other sites More sharing options...
rogerdesa Posted May 25, 2015 Share Posted May 25, 2015 no mate still struggling to get help 1 Quote Link to comment Share on other sites More sharing options...
belfast1986 Posted January 30, 2016 Share Posted January 30, 2016 has anyone had any luck getting assistance with this course. really struggling with the assignment. any help much appreciated! 1 Quote Link to comment Share on other sites More sharing options...
shady101 Posted January 30, 2016 Share Posted January 30, 2016 (edited) Where did you do the course. Edited January 30, 2016 by shady101 1 Quote Link to comment Share on other sites More sharing options...
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