Toshiba TOSVERT VF-AS3 Instruction Manual page 36

Short-Circuit Current Rating (SCCR) and Wire size
Inverter model
VFAS3-4004PCE
VFAS3-4007PCE
VFAS3-4015PCE

VFAS3-4022PCE
VFAS3-4037PCE
VFAS3-4055PCE
VFAS3-4075PCE
VFAS3-4110PCE
VFAS3-4150PCE
VFAS3-4185PCE
VFAS3-4220PCE
VFAS3-4300PCE
VFAS3-4370PCE
VFAS3-4450PCE
VFAS3-4550PCE
VFAS3-4750PCE
*1 The wire size is the one when 75°C is continuously allowed (ambient temperature of 40°C or less)
*2 The wire size is the one when 90°C is continuously allowed (ambient temperature of 40°C or less)
• The rating of fuses in the table is maximum value. Smaller rating fuses can be used for HD ratings.
Branch circuit protection must be provided in accordance with the National Electrical Code and any
additional local codes.
• Use a fuse of Bussmann or Mersen.
3. Measures to satisfy standards
Applicable
Voltage SCCR
motor
class (kA)
(kW) (HP)
Y - -
0.75 1
1.5 2
2.2 3
4 5
5.5 7.5
7.5 10
11 15
15 20
3-phase
480 V
18.5 25
22 30
30 40
37 50
45 60
55 75
75 100
90 125
3-6
Branch circuit protection
with Fuses
Class Rating (A)
X Z1 Z2
5 Class J 3
5 Class J 6
5 Class J 10
5 Class J 15
5 Class J 15
5 Class J 20
5 Class J 30
5 Class J 40
10 Class J 50
10 Class J 60
10 Class J 80
10 Class J 100
25 Class J 110
25 Class J 150
25 Class J 200
25 Class J 225
E6582162c
Grounding
Power
wire sizes
wire
*1
sizes
- -
*1
AWG14
AWG14
*1
AWG14
AWG14
*1
AWG14
AWG14
*1
AWG14
AWG14
*1
AWG14
AWG12
*1
AWG14
AWG10
*1
AWG10
AWG10
*1
AWG10
AWG8
*1
AWG10
AWG8
*1
AWG10
AWG6
*1
AWG10
AWG4
*1
AWG8
AWG3
*1
AWG8
AWG1
*2
AWG6
AWG 1/0
*2
AWG6
AWG 3/0
*2
AWG6
250MCM