Aluminium is no longer just a "cheaper alternative" to copper. According to Indal standards, aluminium offers specific engineering advantages:
Note: Indal advises de-rating by 8-12% for AC applications due to skin and proximity effects, particularly for bars exceeding 8mm thickness. Indal Handbook For Aluminium Busbar
It’s the gold standard for:✅ Sizing for fault levels (50kA/65kA)✅ Calculating temperature rise✅ Correcting for enclosure & skin effect Aluminium is no longer just a "cheaper alternative"