Amada S-2200CA, Operation Manual

Page: 184 / 210

APPENDIX D: WIRE GAUGE AND CIRCUIT BREAKER SELECTION
IS-2200CA/4500CA INVERTER POWER SUPPLY
D-2 990-412
Example:
Using the table below:
•
If a 100amp output current at 100% duty cycle is required, the I
EFF
is 100amps.
•
For the Transformer lines: use a 3/0 cable with a maximum length of 80 feet.
•
For the AC lines: use 1/0 cable with a maximum length of 282 feet.
PRIMARY CURRENT VS WELD DUTY CYCLE
CABLE TO OUTPUT
TRANSFORMER
CABLE TO UNIT
(480 VAC INPUT)
Output
Current
Weld Duty
Cycle (%)
I
EFF
I
PH
AWG @
I
EFF
Amps
1% Drop
(feet)
AWG @
I
PH
5% Drop
(feet)
*500 15 194
158 3/0
80
1/0
282
*400 24
196
160
3/0
80
1/0 282
*280 50
198 162
3/0 80
1/0 282
*200 100
200 163
3/0 80
1/0 282
150 100
150 123
1 40
2 170
100 100
100 82
3 25
4 110
50 100
50 41
8 8
8 45
* Maximum output current at rated duty cycle.
* Rated capacity at 25
°
C.
NOTES:
•
For other output currents see the table on the next page.
•
For other output currents at different duty cycles, apply the above formula to find the new I
EFF
,
the use the following table for cable sizes and maximum lengths.
•
If I
EFF
is not in the table, use the next higher current.