Vertiv
™
NetSure
™
-48 VDC Power System
System Application Guide
Spec. No: 582140001
Proprietary and Confidential © 2022 Vertiv Group Corp.
SAG582140001
Model No: 801
NLDB
, 801
NLEB
, 801
NL
-
B
Page 41
Revision T, September 28, 2022
Fuse/
Circuit
Breaker
Amperage
Recm 90
°
C Wire Size
(1)
6 AWG
4 AWG
2 AWG
1/0 AWG
2/0 AWG
3/0 AWG 4/0 AWG
250
kcmil
300
kcmil
350
kcmil
Loop Length (feet)
(2)
70A
33
(3)
53
(3, 4)
85
(3, 4)
135
(3, 4)
--
--
--
--
--
--
80A
--
47
(3, 4)
74
(3, 4)
118
(3, 4)
--
--
--
--
--
--
100A
--
--
59
(3, 4)
95
(3, 4)
119
(3, 4)
--
--
--
--
--
125A
--
--
47
(3)
76
(3, 4)
95
(3, 4)
120
(3, 4)
--
--
--
--
150A
--
--
--
63
(3, 4)
79
(3, 4)
100
(3, 4)
--
--
--
--
175A
--
--
--
--
68
(3, 4)
86
(3, 4)
108
(3, 4)
--
--
--
200A
--
--
--
--
--
75
(3, 4)
95
(3, 4)
112
(3, 4)
--
--
225A
--
--
--
--
--
67
(3)
84
(3, 4)
100
(3, 4)
120
(3, 4)
--
250A
--
--
--
--
--
--
76
(3)
90
(3, 4)
108
(3, 4)
126
(3, 4)
Recommended Crimp Lug
(5)
Lug
2453-
49900
2453-
50000
2453-
48200
2453-
47100
2453-
47200
2453-
47300
2453-
47400
2453-
47500
2453-
47600
2453-
47700
1
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 90°C conductor
temperature operating in ambients of 30
°
C and 40
°
C was used. For other operating ambient temperatures, refer to the
National Electrical Code. For operation in countries where the NEC is not recognized, follow applicable codes.
2
Recommended wire sizes are sufficient to restrict voltage drop to 1.0 volt or less at listed branch current for the loop
lengths shown. Loop length is the sum of the lengths of the positive and negative leads.
3
Wire Size / Loop Length Combination Calculated using 30°C Ambient Operating Temperature.
4
Wire Size / Loop Length Combination Calculated using 40°C Ambient Operating Temperature.
5
Two-hole lug, 3/8" bolt clearance hole, 1" centers. Lugs should be crimped per lug manufacturer’s specifications.
Table 10 (cont'd on next page)
Recommended Load Distribution Wire Size and Lug Selection for
TPL Fuse and 218 Circuit Breaker (Load Side)