Do wires running attached to joists need to be protected?
If your hat channel is at least 1-1/2” deep it would meet code. (With the wires minimum 1-1/4” away from the bottom). If you want to lay the wires in the hat channel that would not be an approved method. I changed the depth to be 1-1/2" I forgot to add the wire thickness. If large wires your minimum space from the wire to the channel is 1-1/4" to meet code.