4-3. Welding Power Source Input Power Connections
WARNING |
ELECTRIC SHOCK can kill. |
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• | Do not touch live electrical parts. |
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• | Turn Off welding power source, and disconnect input power to rack before inspecting or installing. |
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• | Have only qualified persons install unit. |
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• | Installation must meet National Electrical Code and all other codes. | swarn3.1* 2/93 |
NOTE
When installing conductors from the welding power source, torque the Power circuit breaker terminals and grounding terminal to 40
Have only qualified persons make this instal- lation.
1Control Box
2Access Door
Open access door with same number as welding power source location.
3Welding Power Source Input Power Cord
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4 Strain Relief Connector
Insert input power cord through strain relief into entry hole for opened access door.
5Grounding Conductor – Green Or Green With Yellow Stripe(s)
6Input Conductors
7Power Circuit Breaker Terminals
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8 | Tools Needed: |
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8 Grounding Terminal
Install input conductors from welding power source to Power circuit breaker.
Install grounding conductor to grounding terminal.
Close and secure access door.
Figure 4-3. Welding Power Source Input Power Connections
Table 4-1. Weld Cable Size*
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| Total Cable (Copper) Length In Weld Circuit Not Exceeding |
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| 100 ft (30 m) Or Less | 150 ft | 200 ft |
| 250 ft | 300 ft |
| 350 ft |
| 400 ft | |
| (45 m) | (60 m) |
| (70 m) | (90 m) |
| (105 m) |
| (120 m) | ||
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Welding | 10 To 60% | 60 Thru 100% |
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| 10 Thru 100% Duty Cycle |
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Amperes | Duty Cycle | Duty Cycle |
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100 | 4 | 4 | 4 | 3 |
| 2 | 1 |
| 1/0 |
| 1/0 |
150 | 3 | 3 | 2 | 1 |
| 1/0 | 2/0 |
| 3/0 |
| 3/0 |
200 | 3 | 2 | 1 | 1/0 |
| 2/0 | 3/0 |
| 4/0 |
| 4/0 |
250 | 2 | 1 | 1/0 | 2/0 |
| 3/0 | 4/0 |
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300 | 1 | 1/0 | 2/0 | 3/0 |
| 4/0 |
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350 | 1/0 | 2/0 | 3/0 | 4/0 |
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400 | 1/0 | 2/0 | 3/0 | 4/0 |
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500 | 2/0 | 3/0 | 4/0 |
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600 | 3/0 | 4/0 |
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700 | 4/0 |
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800 | 4/0 |
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900 |
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1000 |
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1250 |
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1500 |
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*Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere. |
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