I assume this is the assistant on a bus who takes passengers' fares (as well as the more familiar English meaning of somebody with similar tasks aboard a train)?
Correct (source: https://en.wiktionary.org/wiki/kondakta).
Fun fact: a conductor of an orchestra is a muongozaji wa muziki (from kuongoza -- to lead, guide or direct). Or as Tanzanians have joked to me, "baba muziki" which I think is great!
Apparently a "conductor" as in a material that transmits electricity, heat, light or sound is an utingo.
I think this is the first time I have seen the word for conductor in full. In normal use people only say "konda"
does kondakta also apply to things that conduct energy like wires?