Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
shall be enclosed in separate conduit or separate conduit systems as indicated on
the Contract Drawings and as specified herein.
Project Number: 228730
Issue Date: August 2017
WWTE SCADA Upgrades
Nashua, NH
TABLE 2.03A — Electrical Enclosure Types
Location/Equipment Acceptable Enclosure Type
Exterior (unclassified) NEMA 4X
NEMA 7 (Explosion Proof)
Class 1 Division 1, Division 2 Locations NEMA 4X for Intrinsically Safe
Equipment
PART 3 —- EXECUTION
3.01 CONDUIT
A. Uses Permitted
1.
Project Number: 228730
Issue Date: August 2017
WWTE SCADA Upgrades
Nashua, NH
d. Provide gasketed cover and accessories by box manufacturer for
complete weatherproofing. Provide correct box to accept
weatherproof covers as specified.
3. Sheet Metal Pull & Junction Boxes
a. Sheet metal boxes shall be standard type galvanized steel and must
conform to UL 50.
b. Box dimensions shall be minimum four inch square or octagon by
2/1/2 inch deep.
C. Sizes up to 12x12x6 inch: Provide screw-type or hinged covers.
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.
Project Number: 228730
WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
2.02 SUPPORTING DEVICES
A. Supports, support hardware, and fasteners shall be protected with zinc coating or
with treatment of equivalent corrosion resistance using approved alternative
treatment, finish, or inherent material characteristic. Products for use outdoors
shall be hot dip galvanized unless material is inherently corrosion resistant.
B. Refer to Table 2.02A for approved supporting device installation guidelines.
1. Conduit Supports
a.
Project Number: 228730
Issue Date: August 2017
WWTE SCADA Upgrades
Nashua, NH
Flexible metallic (FM) conduit shall meet the requirements of UL1.
Liquidtight flexible metallic conduit shall be provided with a
protective jacket of PVC extruded over a flexible interlocked
galvanized steel core to protect wiring against moisture, oil,
chemicals, and corrosive fumes.
Project Number: 228730
Issue Date: August 2017
WWTE SCADA Upgrades
Nashua, NH
Covers shall have captive screws and be accessible after the Work
has been completed.
3. Rigid Aluminum Conduit
a.
RAC, including couplings, elbows, bends, and nipples, shall
conform to the requirements of UL 6 and ANSI C80:5.
Fittings for rigid aluminum conduit shall be threaded and shall
conform to NEMA FB 1. Fittings shall be galvanized by the hot
dip process, unless manufacturer dictates aluminum for specific
application.
Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
1.04 SUBMITTALS
A. Furnish manufacturer's product data, test reports, and material certifications as
required.
1. Product data for cabinets and enclosures with classification higher than
NEMA 1.
2. Shop drawings for floor boxes and boxes, enclosures and cabinets that are
to be shop fabricated (non-stock items).
PART 2 - PRODUCTS
2.01 CONDUIT, RACEWAYS & FITTINGS
Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
SECTION 26 05 34
RACEWAYS, BOXES AND SUPPORTING DEVICES
PART 1 - GENERAL
1.01 DESCRIPTION OF WORK
A.
The Contractor shall provide the labor, tools, equipment, and materials necessary
to furnish and install raceways, boxes and supporting devices in accordance with
the plans and as specified herein.
Types of products specified in this section include:
Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
3.02 BONDING FOR OTHER TRADES
A.
Signal raceways, water piping, heating piping and metallic air ducts shall be
bonded together and to the grounding conductor with No. 8 soft drawn bare solid
conductors. Connections to pipes shall be made with cast clamps of like material
as the pipes to which attached, to ducting terminated in a secure manner by best
practical means, bonding across any flexible or insulated connections.
