What Minimum Size Cable Required

Give us the rest of the information.

Voltage

single phase or 3 phase

Voltage- 415volts

3-phase

Give us the rest of the information.

The following would also help......

- Country & local electrical standards you are working to

- Pump starting current drawn (and maximum allowed voltage drop during starting unless explicitly stated in local electrical standards as percentage, de-rating factor, etc)

Bravo, I'm glad that you want to supply power for a 15kW water pump. I recommend that you contact your local electrician to do this. They will know if the service you already have can support this additional load. They'll know also all the critical information about voltages, phases, local wire codes, and permits required to safely do this job. They will even know what type of connectors, circuit protection, starter configuration, cable support, switches and a whole lot of other critical things that need to be identified at your site. There are lots of under employed electricians out there today who will gladly take your contract.

Now if your electrician tells you that you need something that doesn't make sense to you, come back here and we will gladly try to explain why this is probably a good idea. Don't be upset if we ask a lot of questions though. We cannot see your installation site from our computer screens.

Have A Good Day

15kW x 8oo m x 25C = size of the cable. I cant help you more!

Hello Rodney,

Welcome to the forum.

We wish that you will contribute and learn from this forum.

Before we proceed to your question,here are few general tips to get the maximum out of this forum.

a) Please make your question as detailed as possible, more details you give the better answer you will get.

b) Avoid writing in CAPS as that is considered as shouting in this forum.

c) If any suggestion given by the member actually satisfies you, or does not solve your problem, keep that posted.

d) The members of this forum try their best to solve the problems and do have a very good command on the subject.

e) You will be surprised to see the amount of info, archives hold here..so do a search on here or at Mr Google, and in case you don't get anything you are welcome to post your query.

f) Ask one question at a time.

g) Do not use rude remarks and country/religion/ethnic background/poiltical innuendos, in your comments.

Now coming to the question given the long distance (800 meters) to keep the voltage drop below 2.5% you would require 95 square mm copper cross section. If your need includes neutral and ground and the cable has to be buried then you need 5 core x 95 mm copper Xlpe/PVC/SWA.

Cheers and have a nice day.