Chapter 3 – Installation Instructions
ACH 400 with Electronic Bypass User’s Manual 3-13
Electrical Installation
Cable Entries Most ACH 400 Electronic Bypass drives are configured for wiring access
from the bottom only. Types ACH 401612032 and ACH 401614032 are
configured for wiring access from the top only. At least three separate
conduits are required, one for input power, one for output power to the motor
and one for control signals.
Terminal Sizes Power and motor cable terminal sizes are shown in the Table 3-2 for
connections to an input circuit breaker or disconnect switch, a motor terminal
block and ground lugs. The table also lists torque that should be applied when
tightening the terminals.
Table 3-2 Wire Size Capacities and Tightening Torques for Power Terminals
ACH 400 Type Code and Nominal Hp Wire Size Range(AWG) and Tightening Torque (in/lbs.)
240 V Units 480 V Units Input
Circuit
Breaker
Input
Disconnect Switch
Motor Terminal Block
Ground
LugHp
Type Code
ACH 40x-
Hp
Type Code
ACH 40x-
3 x0043
#14 - #8:
22 in/lbs.
#6 - #3:
4 in/lbs.
#18 - #8:
7 in/lbs.
#20 - #6:
11 - 13 in/lbs.
#14 - #10:
35 in/lbs.
#8:
40 in/lbs.
#6 - #4:
45 in/lbs.
#2:
50 in/lbs.
5 x0053
3 x0042 7.5 x0063
5 x0052 10 x0093
7.5 x0062 15 x0113
10 x0112 20 x0163
#14 - #4:
18 in/lbs.
#14 - #10:
35 in/lbs.
#8:
40 in/lbs.
#6 - #2/0:
120 in/lbs.
AWG
#14 - #10:
35 in/lbs.
#8:
40 in/lbs.
#6 - #4:
45 in/lbs.
#2 - #1/0:
50 in/lbs.
15 x0112 25 x0203
30 x0253
20 x0162 40 x0303
25 x0202 50 x0413 #8 - #1/0:
55 in/lbs.
60 60603x
#2 - #4/0:
120 in/lbs.
#14 - #1/0:
35 in/lbs.
30 x0302x 75 60703x
#2 - 300MCM:
375 in/lbs.
40 x0412x 100 61003x
50 60601x
25 kAIC CB:
#4 to 300 MCM:
275 in/lbs.
65 kAIC CB:
#6 to 350 MCM:
275 in/lbs.
60 60701x
125 612032
#6 - 350kcmil,
275 in/lbs.
#6 - 300kcmil,
275 in/lbs.
#6 - 350kcmil,
275 in/lbs.
300MCM 3BRL
375 in/lbs.
150 614032
#4 - 400kcmil,
375 in/lbs.
125 612035
25 kAIC CB:
#4 to 300 MCM:
275 in/lbs.
65 kAIC CB:
#6 to 350 MCM:
275 in/lbs.
Not Applicable
Bus bar connection:
Two holes, 10mm (3/8”)
diameter, 1” spacing
NEMA two hole lugs can
be used.
350 in/lbs.
Bus bar connection
See description at
left
150 614035
200 62103x
Qty (2) 3/0 to 250
MCM:
275 in/lbs.
250 62603x
Qty (2) 250 MCM
to 500 MCM:
275 in/lbs.
300 63203x
400 64003x
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