Primary Pedestal / Sectionalizing Cabinet
Sample Specification
1.
Scope
This specification covers the minimum requirements for cable junction pedestals designed for
single and three phase service applications.
2.
Pedestal Materials
Pedestal shall be made of fiberglass reinforced polymer with nominal thicknesses as shown in
Table 2.1
Table 2.1
Component
Cover
Pad Mount Base
Direct Bury Base
Nominal Thickness
3/16" (4.8 mm)
3/16" (4.8 mm)
1/4" (6.4 mm)
All externally facing fiberglass reinforced polymer shall be gel coated. Gel coat color shall be
Willow green (light) or Munsell green (7GY3.29/1.5).
The fiberglass reinforced polymer shall be made with fire retardant resin and shall have a
flammability rating of HB per UL-94
The fiberglass reinforced polymer shall be resistant to typical roadside chemicals. The fiberglass
material shall conform to the chemical resistance criteria listed in the latest revision of
ANSI/SCTE 77. Specimens shall be exposed to the chemicals as listed in Table 2.2.
Table 2.2
Chemical
Common Use
Concentration
Sodium Chloride
Road De-Icer
5%
Battery Acid
0.1N
Sulfuric Acid
Water Softener
0.1N
Sodium Carbonate
Detergents
0.1N
Sodium Sulfate
Mineral Acid / Cleaner
0.2N
Hydrochloric Acid
Lye / Caustic Soda
0.1N
Sodium Hydroxide
Solvent / Vinegar
5%
Acetic Acid
Jet
Fuel
Per
ASTM
D543
Kerosene
Mineral Oil
Per ASTM D543
Transformer Oil
Road De-Icer
5%
Magnesium Chloride
The pedestal locking device shall be of cast aluminum-bronze or silicon-bronze with captive 188 stainless steel hardware. The locking device shall have provisions for a padlock.
The junction mounting assembly shall be made of hot-dip galvanized steel, 5000 or 6000 series
aluminum, or 18-8 stainless steel. Parking clips shall be made of 18-8 stainless steel.
All interior and exterior hardware shall be made of 18-8 stainless steel.
3.
Testing & Compliance
Certified test data for any criteria listed shall be made available upon request.
4.
Design
The pedestal shall meet all criteria set forth in ANSI C57.12.28, Pad-mounted Equipment
Enclosure Integrity Standard.
The pedestal cover shall open 90° and base sidewalls shall be of a cut-away type to allow
unobstructed access to internal hardware.
The pedestal base shall be designed to withstand a sidewall pressure of 130 psf (6.2 kPa) without
cracking. This will simulate soil pressure placed on the pedestal.
Both the pedestal base and cover shall be of a female mold design for security and aesthetic
purposes.
The pedestal shall have 4 lifting eyes for hoist slings.
The cover shall be supplied with locking devices to prevent accidental closure. The weight of the
cover is not sufficient to be considered a locking device.
The junction mounting bar shall be designed to accommodate junctions and elbows which
conform to IEEE 386.
The junction mounting assembly shall be able to withstand a 400 lb (1780 N) pulling or pushing
force along the cable junction axis anywhere along the mounting bar without damage or
permanent distortion.
5.
Dimensions
Single phase cabinets used in 200 Amp applications shall have nominal dimensions as listed in
Figure 4.1.
Figure 4.1
25"[635mm]
34"[890mm]
21.5"[545mm]
Height
Dim A
36"[915mm]
42"[1065mm]
48"[1220mm]
A
B
Bury Depth
Dim B
12"[305mm]
18"[457mm]
24"[610mm]
Three phase cabinets used in 200 Amp applications shall have nominal dimensions as listed in
Figure 4.2.
Figure 4.2
25"[635mm]
58"[1475mm]
A
B
Height
Dim A
42"[1065mm]
48"[1220mm]
54"[1370mm]
Bury Depth
Dim B
12"[305mm]
18"[457mm]
24"[610mm]
Three phase cabinets used in 600 Amp applications shall have nominal dimensions as listed in
Figure 4.3.
Figure 4.3
32"[810mm]
78"[1980mm]
54"[1370mm]
24"[610mm]