3 phase underground and voltage drop

1255 Views 6 Replies 6 Participants Last post by guest, Mar 28, 2014

cedricb

Discussion Starter · Mar 26, 2014

Hello,I

i'm working on a new 3 phase underground installation, and doing the voltage drop calculations to determine the conductors sizes i need to pull and the conduit dimensions.
i will only install the wires. However the results i have been pulling from the different calculators i have used are quite enormous.

Could you please give me your opinion on the values and the design?
I have attached the plan

my installation is 600A at 120/208 v three phase in sch40 pvc conduits.

Thank you so much

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cedricb

Discussion Starter · #2 · Mar 26, 2014

plan

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Wirenuting

· #3 · Mar 26, 2014

cedricb said:
Hello, Could you please give me your opinion

Welcome to ET,

My option is that you should ask your electrician. That's the guy doing the rest of your work

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bkmichael65

· #4 · Mar 26, 2014 (Edited)

Looking at the 120 ft run at 600 amps, my calculator says parallel 500 mcm, which should put you in a 3" conduit

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btharmy

· #5 · Mar 26, 2014

Wirenuting said:
Welcome to ET,

My option is that you should ask your electrician. That's the guy doing the rest of your work

Why would he want to hire an electrician to do this "easy stuff" like run conduit and pull wire? They charge WAY too much money. Never mind the fact that they already know what size conduit and wire to install. They bring years of experience to the project that will minimize any problems that might arise. They also have all of the proper tools and equipment to handle and install large feeders. They also have the knowledge of the electrical code in order to install it in a safe and legal manner.

It can't be that hard. Just get on the ole interweb and google it. Better yet, Youtube can teach you to do anything by watching a couple 15 min videos. :thumbup:

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union347sparky

· #6 · Mar 26, 2014

btharmy said:
Why would he want to hire an electrician to do this "easy stuff" like run conduit and pull wire? They charge WAY too much money. Never mind the fact that they already know what size conduit and wire to install. They bring years of experience to the project that will minimize any problems that might arise. They also have all of the proper tools and equipment to handle and install large feeders. They also have the knowledge of the electrical code in order to install it in a safe and legal manner. It can't be that hard. Just get on the ole interweb and google it. Better yet, Youtube can teach you to do anything by watching a couple 15 min videos. :thumbup:

Couldn't have said it better. The only internets he needs to search is the google for a qualified electrician.

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guest

· #7 · Mar 28, 2014

Thanks for posting on ElectricianTalk.com. However, working with electricity and electrical systems can be unsafe if not done by a professional licensed electrician. The moderators of this site would like to advise you to contact a professional electrician in your area.

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