Vertiv | NetSure™ 8200 Series -48 VDC Power System Installation Manual (IM582140000) | Rev. A
Installing and Wiring an Optional Bullet Nose-Type 10-Position GMT Fuse Module (P/N 509128)
Installing
Each optional Bullet Nose-Type 10-Position GMT Fuse Module plugs into ‘distribution device’ mounting
positions of a List C Fuse/Circuit Breaker Panel. Each GMT Fuse Module requires five (5) bullet device
mounting positions. See Figure 98.
1. Install the GMT Fuse Module in the desired position oriented as shown in Figure 98.
2. Connect a customer provided ground lead from the List C Fuse/Circuit Breaker Panel lug mounting
busbar associated to the GMT Fuse Module mounting position (far left or far right most lug mounting
position) to the system’s ground/return busbar. Recommended wire size is 10 AWG. Refer to Figure 98.
NOTE! The ground lead will be installed in a position normally used for -48V distribution. It is
recommended to use a Green lead and insulate the connection with shrink tubing to avoid incidental
contact.
3. Install an appropriately sized GMT-type fuse in each fuse mounting position F1-F10 on the module. If
dummy fuses are installed, remove them first.
4. Verify dummy fuses are installed in all unused positions of the GMT Fuse Module.
5. Verify fuse F11 is a Bussmann GMT 18/100 Amp alarm fuse.
6. Verify fuse safety covers are installed over all fuses.
Wiring
Connections are made to the terminal blocks located on the optional Bullet Nose-Type 10-Position GMT Fuse
Module as shown in Figure 98. Wires are connected to the terminals by inserting the stripped wire into the
wire opening, and then tightening the screw. The wires should be checked for proper installation by gently
attempting to pull the wires from the terminal. The terminal block accepts a wire size in the range of 24 to 14
AWG. Recommended torque is 5.0 in-lbs.
30A MAXIMUM CAPACITY PER BLOCK.
SEE SAG582140000 FOR ADDITIONAL RESTRICTIONS
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