Wire Gauge Ampacity: Difference between revisions
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=Tables - Copper= | =Tables - Copper= | ||
#Engineering Toolbox - [https://www.engineeringtoolbox.com/wire-gauges-d_419.html] | |||
#Xtronics - [http://wiki.xtronics.com/index.php/Wire-Gauge_Ampacity] | |||
#Powerstream - [https://www.powerstream.com/Wire_Size.htm] | |||
=Copper Clad Aluminum (CCA)= | =Copper Clad Aluminum (CCA)= | ||
Revision as of 05:47, 21 April 2020
Basics
- Copper resistivity - 100 compared to aluminum 160. [1]
- Aluminum has about 60% the conductivity of copper, but 30% the weight for a given diameter. All together, aluminum cable is half the weight of copper for the same ampacity. [2]
Tables - Copper
Copper Clad Aluminum (CCA)
Free Air
- "Directly from 4-004(1)(a), you must maintain a cable spacing not less then 100% of the larger cable diameter" - [7]
22 Ga for D3D
- At 24V we need 5A for the main power supply, so 22 ga should be good. 80C rating of [8]. Engineering Toolbox says 1 strand is good for 5A.