I have a circuit that is no longer used and has a 60 amp fuse with 4ga aluminum wire in a 3/4 inch metal conduit running to where I could install a HPWC. Looking at the FAQs in installation manual it says Copper feed only. Is that true, the internal connectors are not AL/CU rated? The model 3 is rated at 40 amps. If I have to replace the AL wire, can I use 6ga in a 3/4 inch conduit, the Tesla manual says the HPWC has 1 inch conduit entrances, can I just use a bushing or is there a code requirement for 1 inch?
Thanks
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