The nec allows a maximum of a 3% voltage drop on the main branch of a circuit at the farthest outlet of power and 5% total to both feeders and branch circuits to the farthest outlet. Singlecable is a cable calculation software that is extremely simple to use and provides results in seconds, whether the cable is a submain feeder or final circuit. Voltage drop is calculated and cable size increased if necessary 3. No download needed, direct access from your web browser. Heres how it works, for single or three phase cable calculations, simply. Cable size calculator excel free download for free download cable size calculator excel files at software informer. Cable sizing software that calculates optimal and cable sizes for phase conductors. Information center tools applications catalogues library medium voltage. Cable size calculator calculate copper, aluminium wire. The cable sizing calculator calculates the required cable size according to. To verify cable voltage drop during the redesign of the projects. The module calculates the csa based on current capacity, voltage drop and fault.
Calculator the minimum crosssectional area determined by calculation shall be not less than the value determined by the following equation applicable only for disconnection times not less than 0. Home technical articles cable sizing of submain electrical circuits working examples few words about submain circuits a submain electrical circuit can be defined as a circuit connected directly from the main lv switchboard to a submain distribution panel or a rising main for final connection of the minor currentusing equipment. Im rewiring a garage there is a sub main in old tinned copper cable singles6mm fed from house consumer unit on nonrcd side. How to work out a sub main cable size talk electrician forum. Today, we are here with another comprehensive copper and aluminum wire size calculator as we have discussed in detail the topic of how to calculate the proper wire size for electrical wiring. Voltimum, the leading portal for the electrical industry. The cable ratings in are based on an ambient temperature of 40c and a ground temperature of 25c. To find out more about how the cable sizing tool works, please see. Cable sizing of submain electrical circuits working examples. The program also enables you to look at the results for the next cable size larger or smaller and the same facility is available for the protective device. Code to add this calci to your website just copy and paste the below code to your webpage where you want to display this calculator. Cable sizing software cable sizing calculation etap. This cable sizing calculation program allows you to calculate cable size based on electric motor minimum allowable starting voltage. Electrical design, cable sizing and certification software.
Current capacity to bs 7671, era 6930 and iec 60502. The ideal electrical design and circuit calculation software for electrical contractors, electrical consultants and electrical engineers. Calculate circuit cable sizes for final circuits, distribution circuits and sub main electrical supplies. Draka has added to its already extensive customer support arsenal with the launching of a unique cable sizing calculator on its website. The test certificate software will utilise a new flood fill function. Singlecable contains an extensive database of cables, protective devices and detailed reports showing calculated results. Cablemate, etap cable sizing, prodesign, and electricalom are some of the best cable calculation software solutions you can download on. Software with a unique approach to the sizing of cables, conduit and trunking.
If the main dno supply enters the building and the consumer unit is say 18m away how would i calculate the cable size. Are you saying that i need to run a 10mm earth from the house csu to the garage. Download the best cable calculation software windows report. The cross sectional area csa of a conductor will cause a volt drop per meter per amp.
Electrical cable size calculator melissa electricals. Based in microsoft excel, our advanced electrical designing software will help you to select the correct cable for the job. Home information center tools applications medium voltage calculation. Cable size calculator software to calculate cable sizes. I intend to install a wylex switchfuse at the meter with the appropriate rated fuse to protect the cable. Cable sizing of sub main electrical circuits working examples the code requires that the maximum copper loss in every sub main circuit should not exceed 1. Excel containment sizing calculator excel networking.
Choose the right cable, according to australian standard as3000. Throughout this time we have continued to develop in to an internationally recognised brand throughout the cable industry. A 3phase submain circuit having a design fundamental current of 100a is to be wired with 4c pvcswa. Once its installed, all you need to do is enter the cable type, ref method, the maximum load in kw or watts and the cable length in metres. Iz current carryng capacity of the cable where it is installed. Electrical calculation tools are based upon schneider electric ecodial electrical network calculation wellknown software. Moreover design errors, incorrect calculation of cable lengths and missing accessories or optional items are common problems which may give rise to errors during the design or tender. Just after a bit of advice and thought id give this forum a try, im still training and have been set a question regarding designing a sub main. Cablecalc bs7671 level 3 is a very efficient design tool which will calculate all of the subcircuits and feeder cables for multiple distribution board projects at the click of a button. The user is to ensure the type of cable is suited to environment and conditions the cable will be exposed to. This software cable pro has enabled me to cut out a huge number of manual calculations as far as maximum demand goes, especially for the larger jobs. This wire size calculator will calculate the appropriate wire gauge for a circuit based on amps, voltage, distance, and load.
Once calculated, the program also enables you to look at the results for the next cable size larger or smaller, and the same facility is available for the protective device. The cable sizing calculator considers solid or stranded copper conductors only. Cablecalc bs7671 level 3 is a software design tool for producing detailed diagrams, schedules, schematic drawings for a complete cable installation. Cable sizing of submain electrical circuits working. Etaps cable sizing analysis software can compute the size of the cables based on cable shortcircuit capacity to. I run a small electrical consulting business and i need to be as productive as i can possibly be. Cable calculator is a website plugin module with a simple and clean interface which allows users to size low voltage cables. User friendly interface with full and accurate cable sizing calculations to iet bs7671 and integrated electrical cad plan design features. Network analysis software, which overcoming any technical limitations, requires a higher level of technical input, can be timeconsuming and often the cost is. Calculate cable tray width calculate cable tray area calculate cable tray length calculate cable tray weight calculate remaining % width of cable tray calculate remaining % area of cable tray free download. Singlecable is a cable calculation software that is extremely simple to use and provides results in seconds, whether the cable is a sub main feeder or final circuit. From my way of thinking the sub main is limited to the 3% volt drop whatever happens thus the final circuit would be used to carry out any other vd calcs which would incorporate the sub vd in the calculations. The cable then reaches an enclosure within the garage where there is a 16a radial for sockets, 6a for lights and an rcd. Better still, its absolutely free to download and use, and it even works without an internet connection.
From a simple submain supply to a garage or shed to a large commercial or industrial project designed, installed and commissioned by our highly competent team of approved electricians. We have been manufacturing cables since 1984 and among our current staff alone we have over years direct cable manufacturing experience. Doncaster cables is the largest british owned general wiring manufacturer in the uk. Short circuit current calculation at various point of. Faster than the heavy full features electrical network calculation software. We have used melissa electrical many times for lighting design in our offices and the supply of the luminaries, and wouldnt hesitate to use them again. This website provides a wire size calculator, voltage drop calculator, wire ampacity charts and more. Just in the middle of pricing a job and debating what cable to use for the sub main. Fault level withstand is calculated and cable size increased if necessary tip. Now it takes just 5 seconds to calculate cable sizes, this means you can quickly produce precision results every time in full compliance.
Impedance and voltage drop to iec 60909 and cenelec clctr 50480. Given the nature of cable sizing, it can be difficult to get the necessary calculations into a spreadsheet, leading to technical inaccuracies, approximations and lack of validation. Easily find all your cable sizes and voltage drops. Calculate size of cable tray excel sheet electrical. Calculations the calculator uses the following formulas for calculating wire size, which are based on ohms law. Online electrical calculator which helps you to calculate the size of copper, aluminium wires in an electrical circuit. It can be accessed around the clock by registering free at.
Singlecable is a cable calculation program that is simple to use and provides results in seconds, whether the cable is a submain feeder or final circuit. The required cable size is the largest size from shortcircuit, overload, and. Sub categories mobile camera mobile digital video recordermdvr. An indispensable tool ensuring accurate calculations from as3000 and as3008 designed to ensure compliance with the australian standards asnzs 3008. Wilson electrical contractors are experts in the installation of mains and submains distribution. This cable sizing calculation program allows you to calculate cable size based. Cablecalc bs7671 will calculate and check for voltage drop.
This cable calculator is set for installation method c clipped direct, for cable types bs5467 and bs6724 swa steel wire armoured cable and is based on the voltage drop selected at 230v single phase and 400v three phase. The max demand tables are built in and i do not have to consult the wiring regulations all the time while im busy with the design. For technical queries with regards to your warranty application please. Calculate the voltage drop of a defined cable and check the maximum length. Aluminum and flexible cables are not supported yet. To be compliant, the cable should have no more than 5% volt drop over its total length for full load current and no more than 10% volt drop for start up.
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