Can you have 2 different voltage wires running through the same raceway.

It depends on the voltage and the type of cable.

You can have multiple 120 or 240 V cables in the same raceway, providing the raceway is properly sized,the cable loads regulated and adjustments are correct for the number of cables in the raceway.

You cannot, use power cables and class 2 cable in the same raceway.

Can you have 2 different voltage wires running through the same raceway.Considering the obvious lack of detail, the answer is yes.