Tesla makes electricians see $$

[neurocutie]

The insulation, connectors, and breakers are all rated for 90c after derating, then there is no issue.

the 90c rating doesn’t mean the wire will be 90c

also, you size the wires based on what you want the temperature rise to be, after factoring Derating factors.


Appropriately sized aluminum is not riskier than appropriately sized copper, at heavier gauges.

so what temperature would a 55amp continuous flow through #6 aluminum be?
moreover with aluminum at #6 (the proposed gauge) there would be no headroom, for say 65amps, in the future. Seems like pulling #6 copper is the smarter move, no?

 

[qdeathstar]

so what temperature would a 55amp continuous flow through #6 aluminum be?
moreover with aluminum at #6 (the proposed gauge) there would be no headroom, for say 65amps, in the future. Seems like pulling #6 copper is the smarter move, no?

It depends on what the ambient temperature is. #2 seu aluminum cable is cheaper than 6-2 nm cable, and has a greater current capacity..

.98/ft vs 1.69/ft and 90 vs 55 amps. Because it isn’t NM cable, you can use the 75c column.


Seems in terms of the hpwc this is a fruitless conversation though, since it appears to only accept copper wire.