Well I have done some research.... A while ago the idea of running 12/2 in parallel rather then using 8/2 cable was discussed here. I mentioned that I had done this in the past on long runs where I had voltage drop issues. It is much cheaper then using 8/2 and more convenient then keeping 2 types of cable on hand. (note voltage drop issues NOT current/load issues) It was then brought up that running cables in parallel contravened the NEC, thereby NOT something that we want to be doing. My research into the CEC (Canadian Electrical Code) found this section: (specifically the parts in red) Rule 12-108 Conductors in parallel When conductors are chosen to be installed in parallel, the load current must be equally divided between all the parallel conductors involved to avoid overheating of the conductors. Copper or aluminum conductors may be installed in parallel by conductively connecting both ends to form a single conductor. Subrule (1) requires the following: their size must be No. 1/0 AWG and larger to prevent overheating; conductors must not have splices between termination points; all conductors must be the same size to keep the conductor material resistance the same; all conductors must have the same type of insulation to prevent damage to insulation on one conductor due to lower temperature rating or different conditions of use; all conductors must be the same length to keep the conductor material resistance the same; and all conductors must be terminated in the same manner at the busbars of the supply and load end equipment to ensure equal sharing of current. When single-conductor cables are chosen for parallel installation, Subrule (2) requires that one of the illustrated configurations in the Note to Rule 12-108 in Appendix B or a configuration recommended by the manufacturer be used. Additional conductors in parallel may be arranged in repetitive configurations of those illustrated. These configurations must not result in unequal division of current in all the conductors used in each phase of the cable systems (see also Rule 4-008 for sheath currents). Conductors in sizes smaller than No. 1/0 AWG do not have the same factor of safety nor can they handle the same installation stresses as conductors No. 1/0 AWG and larger. Subrule (3) allows conductors to be run in parallel in sizes smaller than No. 1/0 AWG if the conductors supply control power to specific devices; all the conductors are run in one cable; each conductor run in parallel can carry the total load; and the overcurrent device is equal to or less than the ampacity of each conductor. Subrule (4) also allows an exception to the minimum No. 1/0 AWG size requirement of Subrule (1) when the conductor is a reduced neutral conductor, sized by Rule 4-022, and the conductors run in parallel meet the other requirements of Subrule (1). Now I am not a electrical engineer, nor am I a certified electrician. But I think that as this reads, we are okay to use the 12/2 cable in parallel based on the Subrule (3). I would be interested in an interpretation of this by a licensed electrician and I am wondering if the NEC has a similar subrule. Sorry for the long post, but this stuff is important. Have a great day.