Alpha Technologies PN-4 - Manual (Page 11)

11 031-103-B0-004, Rev. D
Mounting holes and sweeps indexed from this position.
Indicates PN-3 and PN-4 pedestal enclosure mating surface.
Alpha recommended distance (6" minimum) between edge of pad and cabinet.
Four-inch diameter hole for AC power IN (non-metered installation).
Four-inch diameter opening for DC Output cable and Status Monitoring harness.
All mounting hardware must be stainless, galvanized, or better to prevent corrosion.
5" x 8" rectangular cutout (2 places), open area for all internal connections including: generator power
and/or coax cable conduit sweeps.
A 25+ year continuous vapor barrier must be used between the enclosure and the pad to prevent
moisture ingress and possible corrosion caused by metal to concrete contact. The vapor barrier
material (such as 30 lb. felt, neoprene pond liner, or heavy grade tar paper) must be initially extended
at least 6" in all directions around the perimeter of the enclosure. After the enclosure is secured to the
pad, the material can be cut closer to the enclosure, using the appropriate knife or cutting tool.
3.0 Site Preparation, continued
3.1 Concrete Pad Preparation
Pads can either be poured on site, or precast by Alpha Technologies. Available concrete pad
confi gurations and part numbers can be found in Section 6.
Fig. 3-2, Single-wide Concrete Pad for PN-3 and PN-4
All dimensions shown in inches
0
3.
67
0.
42
7.
58
22
.33
28
.33
0
8.14
6.42
3.11
1.42
9.36
15.86
21.86
9.06
2.
10
5.
90
13
.83
5.
87
7.55
18
.64
14.36
21
.83
26.0 REF
18.6 REF
7.6 REF
24.0 REF
14.14
9.
67
38.0 REF
36.0 REF
1
7
2
6
3
8
5
4
7
1
2
3
4
5
6
7
8