A contractor installed a new transformer. The grounding electrode conductor (GEC) is run in a 1 1/4" emt conduit. There is a box outside the room that the conductor is pulled through before the GEC gets to the transformer. Apparently, from where the GEC originates, the contractor need to retrieve a 120V ciruit. To save the time and material in running a separate conduit for the 120 V, they pulled the branch circuits thru the same GEC raceway. The prior to getting to the transformer, the contractor redirected the branch circuit. This seems odd, but I haven't found any thing in the NEC to not allow this. What is your opinion ?