Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
e. Provide Stainless steel hangers, rods and supports in lieu of PVC
coated when indicated in the Supporting Devices Table below.
TABLE 2.02A — Supporting Devices
Location/Equipment Acceptable Support Type
Exterior Galvanized Steel U-Channel
2.03 BOXES AND FITTINGS
A. Boxes must have sufficient volume to accommodate the number of conductors
entering the box in accordance with the requirements of NFPA 70 and UL 514A.
B. In general, boxes that are exposed to weather, process areas, normally wet
locations, and locations exposed in mechanical spaces shall be cast-metal. Boxes
in all other finished areas shall be sheet metal. Boxes installed in corrosive areas,
such as the chemical feed room, shall be nonmetallic.
C. Refer to Table 2.03A for approved enclosure types.
1. Sheet Metal Outlet Boxes
a. Sheet Metal Outlet Boxes: Standard type galvanized steel,
minimum four inch square or octagon by 1-1/2 inch deep.
b. Luminaire and Equipment Supporting boxes: Rated for weight of
equipment supported; include 2 inch male fixture studs where
required.
C. Single Wall Type: Minimum size, four inch square by 1-1/2 inch or
2-1/8 inch deep, except as noted. Provide dry wall device covers
raised 3/4 inch minimum to insure flush finish mounting.
d. Ganged Wall Type: Minimum depth three inches except as noted,
ganged as required under common plate to contain devices shown.
On 277 volt circuits ganged boxes for switches shall contain only
one circuit or equip box with permanent barriers per NEC Art 404-
8.
2. Cast Outlet Boxes
Type FS shallow and type FD deep, cast ferroalloy.
b. Provide number of threaded hubs as required.
C. Use in all exterior, damp and locations exposed in mechanical
spaces.
RACEWAYS, BOXES AND SUPPORTING DEVICES
WOODARD & CURRAN 26 05 34-6
