Fig. 3 Meter Module Assembly and End Cap Locations
EXTENDED
END CAP
FLUSH
END CAP
MAIN BUS
JOINT BOLTS
#
-20
SCREWS
MAIN
DEVICE
BUS END CAPS:
Install the bus end caps on the left hand side of the far left
meter module in the assembly and the far right meter
module in the assembly. End caps are supplied on the
main switch, main circuit breaker, or main terminal box
(one flush cap and one extended cap). (See Fig. 3 below).
PROVISIONS FOR HUBS OR KNOCKOUTS:
- Top Connections - Outdoor Application (1MM & 3MM)
Knockouts are not provided in top endwall. Punch proper
holes as required. Install raintight hubs on outdoor
devices.
- Top Connections - Indoor Application (1MM & 3MM)
Use the knockouts in top of module as required.
- Top Connections - Indoor or Outdoor Applications
(35MM, 37MM, 35SS, 37SS)
Remove raintight plate and punch proper holes for
installing raintight hubs. Reinstall raintight plate and
install raintight hubs into the raintight plate.
- Top Connections - Indoor or Outdoor Applications
(MTB, MFS, MCB, MHCB, or BPS)
Knockouts are not provided in top endwall. Punch proper
holes as required. Install raintight hubs on outdoor
devices.
PROVISIONS FOR HUBS OR KNOCKOUTS (CONT’D):
- Recheck all main bus joint bolts for tightness. Torque to
300 lb-in. (33.90 N-m).
- Recheck all phase connectors for tightness. Torque to
60 lb-in. (6.78 N-m) minimum.
- Check all wire and cable terminations for proper installation
and tightness of lugs.
- Clean interiors of all units to remove foreign construction
material.
- Reinstall all meter socket covers and tenant breaker
covers.
TESTING AND INSPECTION:
I.L. 70-8306
2
- Backwall Connection (1MM & 3MM)
Knockouts are provided in Meter Modules. Remove
selected knockouts and pull wire through knockout
openings.
- Backwall Connection (35MM, 37MM, 35SS, 37SS)
Knockouts are provided in Meter Modules. Remove
selected knockouts and pull wire through knockout
openings.
PHASE
CONNECTORS
MAIN
DEVICE
- Bottom Connection (1MM & 3MM)
Indoor and outdoor applications use knockouts that are
provided in bottom of meter modules or main devices.
- Bottom Connection (35MM, 37MM, 35SS, 37SS)
Indoor and outdoor applications use knockouts that are
provided in bottom of meter modules or main devices.
Phase connectors are factory installed on the A Phase &
B Phase bus. Remove appropriate phase connectors and
balance for Phase A-B, B-C, or A-C, as needed, across
several meter modules in a complete installation. Torque
all phase connectors to 60 lb-in (6.78 N-m). (See Fig. 4
above).
PHASE BALANCING, 3 PHASE SYSTEM (3MM ONLY):
Fig. 4 Knockout Locations and Phase Connections
TOP KNOCKOUT PLATE
OR RAINTIGHT PLATE
RAINTIGHT
PLATE
BOTTOM
KNOCKOUT
PLATE
Use only the circuit breakers listed on the meter module.
Check amperage and interrupting capacity for the
application.
INSTALL AND WIRE TENANT CIRCUIT BREAKERS:
