Low Voltage Phase Conversion

Write detailed specifications for an electrical contractor to carry out the work according to international electrical specifications and codes. There is a community whose buildings and equipment rooms are completely wired for 127V and 220V(2 phase). About 20 buildings with 8 apartment each. Equipment rooms in which the equipment is wired for 220V(2phase). In the appartments the AC units are wired for 220V(2phase). All existing main and branch electrical panels are 127V and 220V(2phase). Now the power that will be fed to the community will be 380V-220V.

What is required is to chek all circuit wires and make sure the color of the wires adhere to standards after the necessary change. Make sure of changeing the polarity to the correct one.

All lighting and exhaust fans running on 127V must be changed. Check heavy equipment and make sure it is configure to the new power or step down transformers are used.

Need full and detailed specs with detailed illustration drawings to make it so easy for the contractor. In other words a step by step illustrations as to how to carry out the work.

Skills: Electrical Engineering

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About the Employer:
( 0 reviews ) Riyadh, Saudi Arabia

Project ID: #2562493

10 freelancers are bidding on average $643 for this job


hi, i can help.

$800 USD in 5 days
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Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

$700 USD in 12 days
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see my private message

$700 USD in 13 days
(5 Reviews)

Hi, I am an experienced electrical engineer and am very familiar with structural wiring plans, as you have described. I can review/modify the plans for you. Please, contact me and we will get them completed accordin More

$250 USD in 7 days
(4 Reviews)


$750 USD in 10 days
(7 Reviews)

Dear sir we understand your project and i a really want to do it and i am ready to start working in it now please give me this chance and u will never regret

$250 USD in 4 days
(2 Reviews)

Hi, do you need a proffesional help?

$600 USD in 5 days
(6 Reviews)

Dear Employer ready to do the project Please check your PM for detail thanks for your kind consideration Regard -------------------- Syed Mustafa Pasha

$700 USD in 15 days
(0 Reviews)

Please refer to my portfilio and contact with me if need. Thanks!

$250 USD in 3 days
(0 Reviews)

Electrical Power Engineer team, with vast experience. Please see PMB.

$2000 USD in 10 days
(0 Reviews)

This looks to be simple there will be some questions to be answered. I have done such projects in many countries, You would do well choosing me.

$250 USD in 20 days
(0 Reviews)

We are Ex Engineers from Siemens and ABB, Can offer you best solution for Integrated Power supply as you looking.

$625 USD in 20 days
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