Hello, I have a 240 volt hot tub to hook up and have a few questions. I have about a 120' total run from the main disconnect and planned on using 6/3 NM-B from the main through the interior of the house to the GFI Spa panel outside, then about #6 THWN to the tub itself. The manufacture suggests a 50 amp breaker, I believe it is a 35-40 amp draw on start up with all pumps and heater on. This is where I'm a little confused. Its about 65' from the main to the basement wall that goes under my deck, then another 10' under the deck until where the Spa disconnect will be located. I was under the impression that I cannot run the NM-B wire in conduit the last 10' under the deck because that is only rated for interior use. So what can I do to keep it legal and up to code between the basement wall and the Spa disconnect under the deck? Thanks.

My barn currently doesn't have electricity and I want to wire it with 2 light fixtures and a receptacle. The garage (detached from house) has a sub panel and is closer to the barn than the service panel, so the circuit for the barn will be coming from here. Here is a picture of my garage panel. It is fed from a 30 amp two-pole breaker on the service panel by AWG 2 aluminum wires and no EGC. [url=http://i.imgur.com/3j6ZqUi.jpg][/url] (click for larger picture) First I have two related questions: 1) Should the ground in the garage panel be bonded to the neutral bus, since the garage isn't fed with an EGC from the service panel? 2) The yellow romex cable coming into the panel at the top is for a septic->leech field pump. Both the neutral and ground wires are connected to the neutral bus. Should the ground wire be connected to the ground at the bottom of the panel instead? Back to the barn project: My water reservoir+pump is right next to the barn (100 feet from the garage), and its circuit comes through a buried 1-inch PVC conduit from the garage panel (fed by 10 AWG wires from the 20 amp two-pole breaker at upper-left of garage panel) Ideally I would just take power from the existing circuit at the pump, is this impossible because the pump circuit is 240v and has no neutral wire? If I need to run new wires, the underground conduit between garage and pump is 1 inch pvc about 100 feet long with one bend, can/should I put new wires through this with a fish tape?