Revision as of 19:53, 24 June 2023

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]

"Directly from 4-004(1)(a), you must maintain a cable spacing not less then 100% of the larger cable diameter" - [7]

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.

What are the limits to motor startup current, and common house wire? See discussion at Wire Ampacity:

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	[https://docs.google.com/presentation/d/1qzTNV2n-UMCY6J5qQG_geLeMq_7ycntecO-R-snSdx0/edit#slide=id.g1090e189c8c_0_0 edit]		[https://docs.google.com/presentation/d/1qzTNV2n-UMCY6J5qQG_geLeMq_7ycntecO-R-snSdx0/edit#slide=id.g1090e189c8c_0_0 edit]

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