3 phase parallel feeders free
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He told me to go to With your code book open to How would you apply this method to a amp service? Point this little number out to him as well. MCM size is not proportional to the amount of amperage it can carry.
Take a look at the 75 degree column and compare kcmil to kcmil amps as opposed to amps. Gosh that extra mcm bought me a whole 80 amps of extra capacity. This will impact on the ampacity of the system.
I used the situation you discribe with 2 raceways. Used THHN insulation in a damp or dry location. If you install all the conductors in the same race way your in trouble a x.
I've used the code reference Table Could you then comment on Must admit that I did not considered derating in my earlier posts. Utility owned conductors in service equipment?
Your favourite food? Now you know. Key: Admin , Global Mod , Mod. Rate Thread. Joined: Dec Little Elm,Tx. I would also like to know how you came to this with nec ref.. Copy Link to Clipboard. Re: sizing of parallel feeders. Joined: Jul First thing I would do is use his own logic against him. One of the main reasons to use parallel conductors is to reduce over-all cost. Joined: Jan Michigan USA.
George Little. Are all the conductors in the same raceway? I can't agree with any of the answer unless I know more details. Oh sure, George, muddy it up with derating My answer is per standard paralleling using separate raceways and following requirements of Okay kentvw- you made me get the book out.
George, Just because I have done something a certain way for years does not necessarily make it right. Moderated by dougwells , electure , gfretwell , HotLine1 , Scott35 , Trumpy. Posts: 44 Joined: August Trumpy 7. HotLine1 2.
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Give a Shout Out! Recent Posts. New in the Gallery:. Who's Online Now. Previous Thread. Next Thread. Print Thread. Greg Fretwell. A Anonymous Unregistered. I can't agree with any of the answer unless I know more details George Little. Switch to Threaded Mode. Show Likes. View Profile. Private Message. Follow User. Forum Posts. Like Summary. Member Spotlight. Top Posters 30 Days. Trumpy 7 gfretwell 7 grich 3 triple 3 HotLine1 2.
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sizing of parallel feeders - ECN Electrical Forums.Measuring Parallel Conductors - Continental Control Systems, LLC
Log in. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Thread starter Tajon Start date Feb 21, Status Not open for further replies. Tajon Member. Location Los Angeles Occupation Electrician.
Is there a special calculation for 3 phase feeders? Am I missing something? I used the 75 degree column from Any help is greatly appreciated! Location NE 9. Use of this web site signifies your agreement to the terms and conditions. Analysis of three-phase parallel distribution feeders fed from different substations Abstract: The paper addresses the issues regarding paralleling distribution feeders in the environment of automated distribution operations coordinated with transmission operations.
The presented methodology for solving operational problems related to feeder paralleling is based on the method of compensation technique applied for solving three-phase weakly meshed distribution systems with multiple sources. Re: sizing of parallel feeders.
Joined: Jul First thing I would do is use his own logic against him. One of the main reasons to use parallel conductors is to reduce over-all cost. Joined: Jan Michigan USA. George Little. Are all the conductors in the same raceway? I can't agree with any of the answer unless I know more details.
Oh sure, George, muddy it up with derating My answer is per standard paralleling using separate raceways and following requirements of Okay kentvw- you made me get the book out. George, Just because I have done something a certain way for years does not necessarily make it right. Moderated by dougwells , electure , gfretwell , HotLine1 , Scott35 , Trumpy. Posts: 44 Joined: August Trumpy 7. HotLine1 2. Primary distribution overhead networks usually operate radially. By opening or closing switches, it is possible to transfer load blocks between feeders.
To avoid power shutdowns, temporary … Expand. A three-phase power flow method for real-time distribution system analysis. This paper presents a three-phase power flow solution method for real-time analysis of primary distribution systems. This method is a direct extension of the compensation-based power flow method for … Expand.
Highly Influential. View 4 excerpts, references background and methods. A distribution short circuit analysis approach using hybrid compensation method. This paper addresses a new approach for real-time short circuit analysis of radial and weakly meshed distribution networks.
The approach works based on a well documented radial power flow study … Expand. A compensation-based power flow method for weakly meshed distribution and transmission networks. A power flow method is described for solving weakly meshed distribution and transmission networks, using a multiport compensation technique and basic formations of Kirchoff's laws.
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