Wire Gauge Ampacity: Difference between revisions
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=22 Ga for D3D= | =22 Ga for D3D= | ||
*At 24V we need 5A for the main power supply, so 22 ga should be good. 80C rating of [https://smile.amazon.com/gp/product/B00QTCBZ4I/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1]. Engineering Toolbox says 1 strand is good for 5A. | *At 24V we need 5A for the main power supply, so 22 ga should be good. 80C rating of [https://smile.amazon.com/gp/product/B00QTCBZ4I/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1]. Engineering Toolbox says 1 strand is good for 5A. | ||
=Discussion= | |||
*What are the limits to motor startup current, and common house wire? See discussion at Wire Ampacity: | |||
<html> <iframe src="https://docs.google.com/presentation/d/e/2PACX-1vQQpffQ16pxxJbCkwWsZcO1-4it8DByYepnV72iBmrHqki8IYkVVWk384NzwADCFKiTbjRsdm6FHPoy/embed?start=false&loop=false&delayms=3000" frameborder="0" width="480" height="389" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> </html> | |||
[https://docs.google.com/presentation/d/1qzTNV2n-UMCY6J5qQG_geLeMq_7ycntecO-R-snSdx0/edit#slide=id.gbd5e6855d0_0_0 edit] | |||
Revision as of 01:49, 23 June 2022
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.
Discussion
- What are the limits to motor startup current, and common house wire? See discussion at Wire Ampacity: