Quote:
|
Originally Posted by jaydee116
A 226W Tec only uses 24amps (Imax). Welding leads are 1/2" thick and designed to hold couple hundred amps. I just don't see your logic here. 8ga wire should be plenty good.
http://www.powerstream.com/Wire_Size.htm |
First, you don't have 8 AWG on the Peltier (or do you? That would be much heavier than what I have seen is common)
Second, 8 AWG is fine. I'm gonna use welding cable (2 AWG) 'cause I have it on hand, and it is nice and flexible, and I have a futher distance to go.
Third, you are assuming a single Peltier
Using
http://www.stealth316.com/2-wire-resistance.htm at 6 feet and 24 Amps:
18 AWG - 0.9384 Volt drop (22.5 Watts lost)
8 AWG - 0.0912 Volt drop (2.2 Watts lost)
2 AWG - 0.024 Volt drop (.6 Watts lost)
Now in my case, my power supply is on my workbench, a good 15 feet away, so I'd have about 3X these losses