Use of Aluminum Conductors

[letgomywago]

In things like this where the only real difference is cost, not safety or effectiveness, I fail to understand why designers or installers do not want to follow the wishes of their customer. Once you have suggested a lower cost option, and they say no, just move on with the higher cost option.
It is not up to the designer or to installer...the only one that has any say is the customer.

Only time when I wouldn't agree to this is when the specs that aren't necessarily warranted cause extra delays. This project hasn't started if in the engineering phase still so not a factor here but if someone tells me they want a product that takes 3 years to get but we're at completion of the project then this needs to be billed and payed before a 3 year lead time kicks in.