So let's say 120 Amps per phase. Clears things up a bit! Spam Comments Will Be Deleted. Great efforts by you all guys, really making us to understand not only the electrical calculations & how its done but also the excel sheet usage & making us understand the subject. 2.25A x 120V = 270W each 270W x 160 fixtures = 43,200W 43,200 W / ( 208V * 1.73 ) = 120A @ 208V 3 phase Your 200A panel should work fine. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada.
Power factor (cosΦ).
Try downloading now. i am new in this site and it is really help me a lot thank you admin. Calculate electrical load of panelboard (Excel spreadsheet), Voltage / Voltage Difference of Each Phase, Starting/Full Load/Continuous/Non Continuous Load. Leverage Watlow's growing toolkit of calculators, equations, reference data and more to help design your thermal system. Keep going. JavaScript is disabled. Thanks for the answers! You have an amazing ability to make what seems to be very complex electrical engineering issues understandable even to a child.
CAVEAT: Information presented in this post does not constitute professional engineering advice. please help me. Thanks for the reply. The content is copyrighted to EEP and may not be reproduced on other websites. I get a webpage not available error.
It is not 2 amp per phase. There was some problems on EEP with certain IP addresses when logged in.
Dear Irsam, you must be registered member in order to download electrical software or books. Current per phase should be 7A however the current per phase given at the top of the spreadsheet in Load Details section is 2A. To calculate kVA, you need to enter the known values of voltage and the current into the respective fields.
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. Download McQuay Duct Sizer for HVAC Duct Sizing, Download AutoCAD Fonts Library - Free SHX Fonts, Download ASHRAE Heat Load Calculation Excel Sheet XLS, Download Free Arabic and Kufi SHX AutoCAD Fonts, HVAC Duct Size Calculator Excel - Free Ductulator, Download Free AutoCAD Blocks for HVAC Design, Carrier HAP 5.1 - Hourly Analysis Program. myCableEngineering.com Cable Sizing Software - select, size and manage your power cables using myCableEngineering. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3. Note : I want lighting quantity spread sheet, if you have that sheet so please paste the link. How to Convert kVa to KW for Generators. So to size the transformer feeding the panel, would it be correct to take 208V x 120A x 1.73 = 43.18kVA? Just keeps asking me to login first.
Please review.
Do Not Promote Your Business or Your Website Here. Input 5kW 3 phase load into spreadsheet. After all, most equipment rating values are almost always based on heat in a worst-case environment + factor of safety. Get all latest content delivered straight to your inbox. There is an equal amount of lights on each phase. Again, with 5kW 3ph load, these sections show 2A per phase; by my reckoning this should be 7A per phase….or perhaps I’m missing something. E.g. This calculation is not applicable for TW, THW THWN/THHN insulated cables and the number sets per phase.
For example, a three phase circuit using 25,000 watts of power and a line voltage of 250 will have a current flow of 25,000/(250 x 1.73), which is equal to 57.80 amperes. You guys are doing really very great job, the big thing is that its all free for us, i am the design engineer and its really very help full for me, your excel spread sheets and software, i just want to know that can we relia 100% on the spread sheets of cables size/ voltage drop calculation, and again real thanks to all the team of this site and developers of softwares.
Normally you can load your transformers right up to their amperage rating without applying the 80% rule. Assuming that you will be able to get reasonable phase balance, I like to convert to watts first. Plz share password for electrical panel load calculation, One of the best site for all electrical engineers .Thank you for everything team :), Sir, please explain the calculation method for doing calculation, Spreadsheet will give direct result but to get it conceptually we must know exact calculation method. The outdoor transformers typically have high temperature shutdowns / reliefs. So 150 Amps per phase. User manuals, specification sheets, CAD drawings and more. Edvard, keep up the good work. Dear Sir, You people are doing tremendous job it is very helpful for practicing Engineers, I have just one quarry that in the sheet there is no option for 3.5 core cable.please help me how can i find the values when the cable used is of 3.5 core. This xls file calculates the total panel load current on every phase, expected horse power, voltage difference, expected temperature rise, and the total connected KVA. I find that statement a bit misleading. Learn about power engineering and HV/MV/LV substations.
It's a utility company, they have their own code and are not confined by the CEC.
The three phase power calculator calculates the active and reactive power current from the following parameters: Voltage (V): Enter the phase-to-phase (\(V_{LL}\)) voltage for a 3-phase AC supply in volts. Yes the transformer can be fully loaded, but the wire size and overcurrent still must be increased as per 8-104, 26-252, and 26-254, Off topic, but interesting (to me anyways). Tell us what you're thinking... we care about your opinion!
We recommend you now use our main cable sizing application over at myCableEngineering.com. There-phase power calculation: “If you chose not to decide, you still have made a choice” Rush. I would take 120A x 1.25 for continuous load. But it is very useful for BS standard cables. In this case, 43kW is far too close to 45kVA. Please email me the software for Calculate Electrical Load of Panel , i don’t have the login.
Hey there, stupid question that I should know the answer to.. but.. if I have 160 lights drawing 2.25A ea at 120 volts being fed from 3 phase lighting panel.. how would i calculate total load on the panel? Come join the discussion about trade knowledge, tools, certifications, wiring, builds, scales, reviews, accessories, classifieds, and more! For three phase circuits the power factor is the square root of 3. For a better experience, please enable JavaScript in your browser before proceeding. It will help you.
Download a 3 phase electrical panel load calculation spreadsheet. Leverage Watlow's growing toolkit of calculators, equations, reference data and more to help design your thermal system.
Professional Electrical Engineer, construction industry. Current (I): Enter the the current in Amperes (A). Since more then one phase in at a time? Thank you for the admin and the team for this informative and educative site without aim any financial profit. This MS Excel spreadsheet has possibilities to calculate the following: 5000/(RAIZ(3) x 415) = 7 amp per phase. Soof, The phase currents given under ‘Load Details on Main Panel’ and ‘Feeder Wise Electrical Load on Main Panel’ do not appear correct when using 3 phase loads. Or would you take 360/1.73 to get 208 amps? Verify all calculations with a … Simple electrical calculator to calculate the three (3) phase electric power in a circuit based on voltage and current.
Would a 200 amp panel suffice for this? Again, with 5kW 3ph load, these sections show 2A per phase; by my reckoning this should be 7A per phase….or perhaps I’m missing something.
Study specialized technical articles, electrical guides, and papers. Soof, The phase currents given under ‘Load Details on Main Panel’ and ‘Feeder Wise Electrical Load on Main Panel’ do not appear correct when using 3 phase loads. So that we can focus all our efforts on our new application, we have retired our myElectrical.com cable sizing calculator. The utility companies drive their outdoor gear a lot harder than we do.
The current calculations per phase for 3ph loads on this spreadsheet do not appear to be correct.
The most important thing to consider when sizing a generator is the high inrush currents associated with starting electric motors and transformers, which are typically six times the full load current. A 200 amp panel should be fine. Great job! Do I need to upsize anything as it's continuous load or would a 45 kVA transformer suffice? As long as it shuts down before everything melts, no hazard... apparently! User manuals, specification sheets, CAD drawings and more. P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W) V = voltage in Volt (V) exemple : V1=230 V in 400 V three-phases circuit I1, I2, I3 = current of phase 1, phase 2 and phase 3 in ampere (A) Cos φ1, Cos φ2 , Cos φ3 = cosinus phi of each phase (without unit) Download a 3 phase electrical panel load calculation spreadsheet. 3 Voltage Drop is Line to Neutral Calculations and not Line to Line. Assuming that you will be able to get reasonable phase balance, I like to convert to watts first. No guarantees are made as to the accuracy of the calculation or compliance with local codes. This xls file calculates the total panel load current on every phase, expected horse power, voltage difference, expected temperature rise, and the total connected KVA. Please email me a copy of that panel loading spreadsheet.
want to connect..send me link to get registered.. Excel shows this error when a formula or function “UnBalance Neutral Current”. 1 Enetr Your Main Panel Capacity and Size of Incoming Cable of Main Panel, 2 Enter Outgoing Circuit Capacity of Main Panel, 1 Enter connected Electrical Load in KW or HP, 3 Select Your Electrical Circuit's Phase (3 Phase or 1 Phase), 5 Select Cable installation media (Ground/Air), 6 Enter Appropiate Details for Air or Ground Media, 7 Enter Allowable Vokage Drop for that Circuit, Electrical Panel Load Calculation Spreadsheet.
plz can you share to us an example for calculating, good for work but if copy add row then it conduce to wrong result. Ohm's Law Calculator 3-Phase Delta / Wye Calculator. A forum community dedicated to professional electricians, contractors, and apprentices for residential and commercial work. Without that buffer, you need to take into account power factor, starting current, and any other parasitic loads. Thanks.
It won’t allow me to download it.
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