30
Instruction Booklet
IB156002EN
Effective January 2022
Eaton HCU2/HCUn active harmonic
filter installation manual
EATON
www.eaton.com
Figure 32 . Wallmount main and expansion electrical connections
CT and control wir-
ing grommet
Power cable cover
Air intake grill
Service door
Using a T30 driver, open the service door.
At the bottom of the unit using a T25 driver, remove the air intake
grill and power cable cover.
Figure 33 . Power cable cover
Grommets
Power cable cover
To remove power
cable cover use
a T25 driver to
remove these
two fastners
Remove the grommets from the power cable cover.
Figure 34 . Line, neutral, and ground—torque
Ground
Using a punch or similar, create a hole in the grommet just large
enough to allow the line, ground and neutral (if required) wires to
pass through the grommet.
Pass one cable through each of the grommets.
Connect an appropriate one-hole crimp lug on the end of each wire
for an 8 mm stud.
Reinstall the power cable cover using the T25 hardware. Ensure that
the grommets are properly seated.
Figure 35 . UL Type 1 main and expansion electrical connection
Line connection
Ground
connection
Neutral
connection
Remove the bottom air intake grill. Connect power and neutral
conductors, connect ground wire to the provided ground lug.
Table 9 . Wire sizing and terminal torque specifications for UL Type 1 models
Unit rating
Phase lug
Neutral lug
Ground lug
Minimum
Maximum
Torque
Minimum
Maximum
Torque
Minimum
Maximum
Torque
20 A and 30 A
14 AWG
6 AWG
2.8 Nm
14 AWG
1/0 AWG
13.6 Nm
14 AWG
6 AWG
2.8 Nm
4 AWG
2 AWG
5.6 Nm
50 A and 60 A
6 AWG
2 AWG
4.5 Nm
6 AWG
2/0 AWG
42.4 Nm
14 AWG
6 AWG
2.8 Nm
4 AWG
2 AWG
5.6 nm
