Vertiv | NetSure™ 8200 Series -48 VDC Power System Installation Manual (IM582140000) | Rev. A
Load Connections
Important Safety Instructions
DANGER! Adhere to the “Important Safety Instructions” starting on page 7.
NOTE! Refer to System Application Guide SAG582140000 for recommended wire sizes and crimp lugs.
Refer also to the SAG for maximum size of wire to connect to the various lug landing points. Lugs
should be crimped per lug manufacturer’s specifications.
Power/Distribution Bay
Each power/distribution bay has two (2) distribution buses. Each distribution bus has twenty-four (24)
fuse/circuit breaker device mounting positions. Note that the various fuse/circuit breaker devices require
different number of mounting positions. The load side of each fuse/circuit breaker mounting position is bused
up to the top of the bay. Each fuse/circuit breaker device is supplied with a load lug adapter plate that mounts
to the appropriate load side busbar at the top of the bay (except bullet nose-type devices which use the
existing busbar provided at the top of the bay and do not require a lug adapter plate). Load return leads are
terminated outside the bay. An optional external ground busbar mounted on top of the bay is available.
Refer to Figure 94 for load lug landing locations.
When lugs are secured using 1/4 inch hardware, recommended torque is 60 in-lbs when a Belleville lock washer
is used, and 84 in-lbs when a standard flat washer and lock washer are used.
When lugs are secured using 3/8 inch hardware, recommended torque is 180 in-lbs when a Belleville lock
washer is used, and 300 in-lbs when a standard flat washer and lock washer are used.
Load Side
Connect load leads to the respective load busbar located at the top of the bay. These busbars are provided
with 1/4-20 studs and hardware on 5/8 inch centers for installation of customer provided two hole lugs. Note
that for distribution devices that require more than one distribution mounting positions, lug adapter kits are
furnished. The kit supplied lug adapters are provided with 3/8 clearance holes on 1 inch centers for installation
of customer provided two-hole lugs. The kit also contains 1/4" and 3/8" mounting hardware.
Load Return Side
To Optional External Top-Mount Ground (Load Return) Busbar Assembly and Optional Load Return Lug
Extension Busbar Assembly:
Connect load return leads to the external ground busbars mounted on top of
the bays. These busbars are provided with 3/8 inch clearance holes on 1 inch centers for installation of
customer provided two-hole lugs. Customer must supply lug mounting bolts and hardware (note that the Load
Return Lug Extension Busbar is provided with lug mounting hardware).
To Optional Internal Ground (Load Return) Busbar Assembly:
Connect load return leads to the internal
ground busbars mounted inside the bays. These busbars are provided with clearance holes for installation of
customer provided two hole lugs. Customer must supply lug mounting bolts and hardware. Refer to Figure 95.
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