high current problem...

[jimbobsimmonds]

i know this is more electrical rather than electronics but was still hoping some people here could help...

my problem is that i have to use a large resistive load of:

Max Power: 10KW @28VDC...

and

Max Power: 13KW @ 208VAC

both are in seperate looms, so what sort of current am i looking at and what sort of cabling will be adequate...

thanks
jimbob

 

[Hero999]

Calculate the current using Ohm's law.

The cabling is a little more difficult: it depends on many factors: current, maximum acceptable voltage drop, conductor material, ambient temperature, maximum temperature rating of electrical insulation and surrounding materials, the number of neighbouring conductors in the conduit/sheath and the thermal insulation of the surrounding material.

For a start answer the following questions:

What's the maximum acceptable voltage drop?

Are the cables well ventilated? Are they in free air, a conduit or surrounded by a thermal insulating material such as foam?

How long are the cables?

 

[jimbobsimmonds]

minimal voltage drop if possible and the cables will be near people so will need to be well insulated. also we are looking in the 10-15m range of length...