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Conduit is not required for residential electrical IF THE WIRING IS BEHIND THE WALL. If it's exposed wiring, you'll need to use conduit.
Not normally. An elaboration of what circuits are in the conduit and what type of conduit it is would be useful, though, and necessary to give a definitive answer.
Generally, when using PVC conduit you should also run a ground wire.
No. The new electrical code change does not allow any flexible conduit to be used as a ground means. It is now required to have a green ground wire pulled into the conduit with the other conductors in the flexible conduit. This grounded bonding conductor is not counted as wire fill when calculating the size of the flexible conduit to use
9 - Is this a test answer or do you just want to know for a project you're doing? Take a look at NEC chapter 9 - tables 4 and 5 (in the 2005 edition at least)
Annually in most commercial buildings
Conduit is not required for residential electrical IF THE WIRING IS BEHIND THE WALL. If it's exposed wiring, you'll need to use conduit.
What kind of wire? If it's a power wire, why is the place wired with conduit? Commercial buildings must put all power wiring in conduit, so if you're planning to run romex in a commercial building, the answer would be "no", it's not permissible. If it's data wire, note that there may be some "crossover" interference if the data wire follows a power wire for very much distance. It's usually not a problem to cross a conduit and tie to it, but it's generally recommended that you not tie data cable to conduit.
Alkemeyer Commercial Buildings was created in 1879.
office and industrial buildings; commercial buildings, including retail stores, restaurants, and service stations; apartment buildings, hotels, and motels; warehouses; and highways, bridges, tunnels
Not normally. An elaboration of what circuits are in the conduit and what type of conduit it is would be useful, though, and necessary to give a definitive answer.
Generally, when using PVC conduit you should also run a ground wire.
Monroe Avenue Commercial Buildings was created in 1911.
A commercial building , is a building that has only commercial offices in it.
Yes it should be grounded
Plastic conduit is commonly used as tubing in electrical work. It is commonly used underground between buildings, as plastic offers a lower cost solution.
When runing flexible conduit it is required strap the it inches from a box coupling or conector