24v AC an 24v DC over 600 ft

If you go to the "search this forum" window on the right you will find many references to voltage drop, such as Voltage Drop Formula

You could also search for the solution and find sites such as this:

Voltage Drop Calculator - Southwire

How to Calculate Voltage Drops

COMPREHENSIVE VOLTAGE DROP CALCULATIONS

Voltage drop - Wikipedia, the free encyclopedia

Check out some of these sites.

If the control signals are 4-20mA, then the proverbial "two bits of wet string" would do.

British Standard 7671, anyone?

Hi Pinz, I could never get my head around awg, over here we use the metric system.

But you have a 200 meter lead between controller and the controls, the current that you are using is only milliamps for each device, You have to work out how many devices you are controlling and calculate the voltage drop over the circuit.

To do this you need to know and understand a few things;

1: Number of controls to motors

2: Voltage that each of these controls is operating at

3: Current draw of each control

4: Study the electrical schematic and understand just what is happening

When you have done this the answer will be there with a few math calculations.

It is difficult for us to tell you what to do when we don't have all the information, It's a bit like asking "How Long Is a String".

More Information required

Cheers

Joe

A 12 awg COPPER wire would give a voltage drop of approx 2 volts per amp at a one way distance of 600 ft ( which is about 10 percent of control voltage)and hence you need to calculate current in each ciurcuit precisely and decide the wire size.

PRIYADARSHAN

ELEMENTARY OHM's law

12 G if you don't care for money.

20 G IF YOU ARE A PENNYPINCHER

Thanks guys, I realize i have to get the amprage for all these devices (approx 100 low voltage runs), unforunatly the draw is not labeled on the schematic/prints so we have to give the engineer of this project a ring.

Will update, thanks for the help!