Did you mean AAC or possibly ACCC conductor?
ACC is a signal cable supplied with end connectors and used to, among other things, trigger remote camera flash units.
ACCC and AAC are bare conductors and as such are not rated for voltage.
Some constraints are:
Rating of the existing insulators.
Spacing of the existing insulators.
Corona effect. Some references give 30 kV as the threshold for corona subject to other conditions. However, corona is rarely an issue at 33 kV.
[URL unfurl="true" said:
http://www.velco.com/library/document/download-migrated/Transmission%20Line%20Corona.pdf[/URL]]Corona occurs on all types of transmission lines, but it becomes more
noticeable
at higher voltages (345
kV and higher).