I am trying to install a 60 amp sub panel in my house to power my wife's saltwater tanks. I know I need 6/3 to go from main panel to sub panel. My question is I have to run it along the wall to get to the ceiling then down the wall to get to sub panel. What type of wire and do I need conduit? The sub panel will be just outside the backdoor under the porch. Coming out of main panel the wire will be exposed upto ceiling then over about 2 feet at which time will go into ceiling. Then will come out porch ceiling outback into the sub panel. Project is on hold to I can get clarification.
Decisions on what type of system you need to install and where are usually about what kind of protection is needed to prevent damage to the conductors. All of these systems can be found in Chapter 3 of the NEC "Wiring Methods and Materials. Each article will have a type of system and each article will list where they are approved and where they are not approved. Then it comes down to if you want to switch different systems in different areas or do you want to choose one system that covers all conditions.
Maybe we can be more explicit if you will reword your question and be more specific about the locations you are running it though. For example if you are running it along the wall. Is the wall on the exterior or the interior? Is it subject to machine or people traffic or is it out of reach? And if you want one cable or conduit system or use different systems in different areas for cost, access and labor concerns.
Hope this helps and good luck.