Application Guide
SAG584000300 System Application Guide
Issue AB, April 5, 2013 NetSure™ 4015 30kW 400V DC Power System
Spec. No. 584000300 (Model 4015-X003)
Page 24 of 32
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DC Load Distribution (Distribution Sub-Rack)
Refer to Table 8 for recommended wire sizes and lugs.
DC Load Distribution
(Screw-Clamp Type Terminals Provided)
HRMG (High Resistance Midpoint Ground) Configuration:
Distribution leads are connected to the distribution devices.
NPG (Negative Pole Ground) Configuration:
Distribution leads are connected to the distribution devices and return busbar.
Over Current
Protective Device
1
+35 C Ambient Temperature
Recm. Wire Size
2, 3
Conduit Size
4
(if used)
4A, 6A, 8A, 10A
14 AWG (2.5mm
2
)
1/2” (13mm)
16A, 20A
12 AWG (4mm
2
)
1/2” (13mm)
25A
10 AWG (6mm
2
)
1/2” (13mm)
32A
8 AWG (10mm
2
)
1/2” (13mm)
40A
8 AWG (10mm
2
)
1/2” (13mm)
50A
8 AWG (10mm
2
)
1” (25mm)
63A
6 AWG (16mm
2
)
1” (25mm)
1
Load should not exceed 80% of device rating.
2
Wire sizes based on recommendations of the American National Standards Institute (ANSI)
approved National Fire Protection Association's (NFPA) National Electrical Code (NEC).
Table 310-16 for copper wire at 75 C conductor temperature operating in ambient of 35 C
was used. For other operating ambient temperatures, refer to the NEC. For operation in
countries where the NEC is not recognized, follow applicable codes.
3
THHW 75 C wire.
4
Conduit sized for two (2) current carrying conductors and one (1) ground conductor per
conduit (based on NEC recommendations). For operation in countries where the NEC is not
recognized, follow applicable codes. When using power cords, power cords must meet the
temperature and voltage requirements for the installation.
Table 8
Recommended DC Load Distribution Wire Sizes and Lugs