Anyone know of a decent on-line 12-volt voltage drop calculator???

[neale]

I'm sure I've used one but can't seem to find it.

Just want to input amps, volts and distance, and be shown correct wire sizing for max 3% drop.

I know I could do it manualy, but I've got lots to do and I'm a lazy so and so. /forums/images/graemlins/grin.gif

Cheers

 

[mortehoe]

E = (0.0164 x I x [Distance x 2 in metres]/Total cross sectional area of all wires in mm^2

Where E = voltage drop; I = current in Amps.

This is for TINNED wire or domestic wire with (rosined) tinned ends.

Domestic copper wire exposed to maritime conditions will go gagga and black within a year and the voltage drop will be horrendous ie upto 30% of input voltage or more!

 

[saltwater_gypsy]

Here is a site with all the griff.
http://www.drydenaqua.com/instruments/aq...c%2520wires.htm

 

[VicS]

There is this

<span style="color:white"> ........... </span> http://www.unlimited-power.co.uk/cable_sizing.html

<span style="color:white"> ...................................................................................</span>Any good?

And this

<span style="color:white"> ............ </span> http://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html

 

[colinmi]

Try This

Or I have ahome made spread sheet that does the job OK.


http://www.energyforce.co.uk/cable.html

Cheers

Colin

 

[neale]

Thanks everyone. Just what I needed.

Cheers