No you can not run class 1 and 2 in the same raceway but you can reclassify class 2 or 3 circuits to class 1 then run them in the same conduit with other class 1 conductors [Linked Image] 725.52(A)Exception No. 2

I doubt highly that is the case of the wiring in Joe's Picture.

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts