352.10 Uses Permitted. The use of PVC conduit shall he permitted in accordance with 352.10(A) through (I).
Informational Note: Extreme cold may cause some nonmetallic conduits to become brittle and, dierefbre, more susceptible to damage from physical contact
(A) Concealed. PVC conduit shall be permitted in walls, floors, and ceilings.
(B) Corrosive Influences. PVC conduit shall be permitted in locations subject to severe corrosive influences as covered in 300.6 and where subject to chemicals for which the materials are specifically approved.
(C) Cinders. PVC conduit shall be permitted in cinder fill.
(D) Wet Locations. PVC conduit shall be permitted in portions of dairies, laundries, canneries, or other wet locations, and in locations where walls are frequently washed, the entire conduit system, including boxes and fittings used therewith, shall be installed and equipped so as to prevent water from entering the conduit. All supports, bolts, straps, screws, and so forth, shall be of corrosion-resistant materials or be protected against corrosion by approved corrosion-resistant materials.
(E) Dry and Damp Locations. PVC conduit shall be permitted for use in dry and damp locations not prohibited by 352.12.
(F) Exposed. PVC conduit shall be permitted for exposed work. PVC conduit used exposed in areas of physical damage shall be identified for the use.
Informational Note: PVC Conduit, Type Schedule 80, is identi- fied for areas of physical damage.
(G) Underground Installations. For underground installa- tions, PVC shall be permitted for direct burial and under- ground encased in concrete. See 300.5 and 300.50.
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John120/240 said:
NO the six foot rule applies when using liquid tight metallic conduit. The metal
spiral inside the conduit can be used as your ground if you use approved
connectors & keep it six feet or less in length.
For non metallic conduit (what you are using) a ground wire is required for any
length conduit from just inches to hunderds of feet.
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680.42 Outdoor Installations. A spa or hot tub installed
outdoors shall comply with the provisions of Parts I and II
of this article, except as permitted in 680.42(A) and (B),
that would otherwise apply to pools installed outdoors.
(A) Flexible Connections. Listed packaged spa or hot tub
equipment assemblies or self-contained spas or hot tubs
utilizing a factory-installed or assembled control panel or
panelboard shall be permitted to use flexible connections as
covered in 680.42(A)(1) and (A)(2).
(1) Flexible Conduit. Liquidtight flexible metal conduit
or liquidtight flexible nonmetallic conduit shall be
permitted in lengths of not more than 1.8 m (6 ft).
Want more information on non-metallic fittings wholesale? Feel free to contact us.
Not so here in CA. Has been this way for a while
680.42 Outdoor Installations. A spa or hot tub installedoutdoors shall comply with the provisions of Parts I and IIof this article, except as permitted in 680.42(A) and (B),that would otherwise apply to pools installed outdoors.(A) Flexible Connections. Listed packaged spa or hot tubequipment assemblies or self-contained spas or hot tubsutilizing a factory-installed or assembled control panel orpanelboard shall be permitted to use flexible connections ascovered in 680.42(A)(1) and (A)(2).
If you want to learn more, please visit our website metallic flexible conduit supplier.