ELECTRICAL INSTALLATION
Wiring Guidelines
17
Branch Circuit Protection
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protec
-
tion must be provided in accordance with the National Electrical Code and any additional local codes, or the
equivalent. Drive shall be protected by fuse or inverse-time circuit breaker only, rated 300 V, and a maxi
-
mum 300% of full load motor output current rating as noted below.
Fuse/Circuit Breaker and Wire Sizing
1
Based on a 3% voltage drop.
*
90
C Insulation only.
Note:
Drive minimum breaker amps may be lower than AIM Manual specifications because of the soft-start
-
ing characteristic of the drive.
Wire Sizing
Note:
The drive terminal blocks are rated to accept 6AWG – 20AWG (both input and output wiring).
6AWG is the maximum wire size the drive can physically accept. An external junction box is required if using
larger wire (i.e. you can use 4AWG or bigger cable out to the motor, but you will have to junction and splice
this to 6AWG or smaller before entering the drive enclosure).
Risk of damage to drive
,
or malfunction can occur.
Follow all wire routing and grounding instructions carefully. Inductive currents caused by parallel wiring,
or close proximity between high voltage and control wiring can cause unexpected behaviors.
•
Do not run input power and motor wires in the same conduit.
•
Do not run motor wires from multiple drives in common conduit.
•
Do not run control wiring parallel with high voltage wiring.
•
Do not install a magnetic contactor or disconnect in the motor circuit.
•
Do not run drive wiring parallel with house or out-building wiring.
•
Do not use aluminum wires for drive connections.
•
Do not use with a Ground Fault Circuit Interrupter (GFCI) between breaker panel and motor.
•
All wiring must comply with the National Electrical Code and local codes.
•
Improper splicing or damage to motor cable insulation may expose the conductor(s) to moisture
and can produce motor cable failure.
Model
Input
Voltage
Motor HP
Fuse/
Breaker
Amps
AWG Copper Wire Sizes, 75° C Insulation, and
Panel to Drive Cable Lengths (in feet)
1
14
12
10
8
6
4
3
2
1
1/0
UT3P
230
1/2 (0.37 kW)
15
130
205
340
525
835
1315
1635
2150
2720
–
230
3/4 (0.55 kW)
15
130
150
250
390
620
975
1210
1595
2020
–
230
1.0 (0.75 kW)
20
70
*
110
*
185
285
450
715
885
1165
1475
–
230
1.5 (1.1 kW)
25
–
–
140
215
340
540
670
880
1115
–
230
2.0 (1.5 kW)
25
–
–
105
167
264
421
530
669
843
1062
