SAG582140000 SYSTEM OVERVIEW - Emerson Network Power

System Application Guide SAG582140000
Spec. No. 582140000 (Model 802NLDB, 802NLEB, 802NL-B) Issue AL, April 12, 2010
AC Input (Individual Rectifier Feeds) Wire Sizes, Branch Circuit Protection, and Lugs
Features
♦ Studs (10-32 on 5/8" centers) are provided for installation of customer provided two-hole AC Input lugs.
These studs are accessed from the inside top left side of the each Power/Distribution Bay.
♦ Studs (10-32 on 5/8" centers) are provided for installation of customer provided frame ground lugs.
These studs are accessed from the inside top left side of the each Power/Distribution Bay.
♦ For lug mounting hole size and spacing dimensions, refer to the illustration provided in this section.
Restrictions
All lugs for customer connections must be ordered separately.
Customer needs to supply lug mounting hardware.
An individual feed AC input panel is provided for Lists 1 and 11 only.
Ordering Notes
1) Refer to Table 9 for recommended wire sizes, branch circuit protection, and lugs.
Ambient
Operating
Temperature (1)
Nominal
Input
Voltage
(VAC)
Recm
Branch
Circuit
Protection
(Amperes) (2)
Recm 90°C
Wire Size
(AWG and
kcmil) (1)
Page 65 of 107
Line Ground (5)
Recommended
Crimp Lug (3)
Recm 90°C
Wire Size
(AWG and
kcmil) (4)
Recommended
Crimp Lug (3)
30°C
and
480 20 12 245390100 12 245390100
40°C 208 50 6 245346500 6 245346500
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
The AC input branch circuit protective device should be of the time-delay or high inrush type.
3
Two-hole lug, #10 bolt clearance hole, 5/8" centers. Refer to drawing 031110100 for lug crimping
information.
4
Equipment grounding conductor size based on recommendations of the NEC Table 250-122 for copper
wire. If aluminum or copper clad aluminum grounding conductor is used, refer to Table 250-122 for
increased conductor size. For operation in countries where the NEC is not recognized, follow applicable
codes.
5
Equipment grounding conductors must be provided with the AC input conductors supplied to the Bay.
Frame ground terminals must be connected to earth ground, not power system neutral.
Table 9
Recommended AC Input Wire Size and Lug Selection
Individual Rectifier Feeds - Up to Ten AC Input Branch Circuits
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