Miller Electric XMT 4-Rack manual Welding Power Source Input Power Connections, 400 ft, Duty Cycle

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4-3. Welding Power Source Input Power Connections

WARNING

ELECTRIC SHOCK can kill.

 

Do not touch live electrical parts.

 

Turn Off welding power source, and disconnect input power to rack before inspecting or installing.

 

Have only qualified persons install unit.

 

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 in-lbs (4.5 N·m).

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

1

7

6

3

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

2

 

5

 

8

Tools Needed:

4

ST-158 333 / ST-151 269-B

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*

 

 

Total Cable (Copper) Length In Weld Circuit Not Exceeding

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Welding

10 To 60%

60 Thru 100%

 

 

10 Thru 100% Duty Cycle

 

 

 

Amperes

Duty Cycle

Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

2-2/0

 

2-2/0

300

1

1/0

2/0

3/0

 

4/0

2-2/0

 

2-3/0

 

2-3/0

350

1/0

2/0

3/0

4/0

 

2-2/0

2-3/0

 

2-3/0

 

2-4/0

400

1/0

2/0

3/0

4/0

 

2-2/0

2-3/0

 

2-4/0

 

2-4/0

500

2/0

3/0

4/0

2-2/0

 

2-3/0

2-4/0

 

3-3/0

 

3-3/0

600

3/0

4/0

2-2/0

2-3/0

 

2-4/0

3-3/0

 

3-4/0

 

3-4/0

700

4/0

2-2/0

2-3/0

2-4/0

 

3-3/0

3-4/0

 

3-4/0

 

4-4/0

800

4/0

2-2/0

2-3/0

2-4/0

 

3-4/0

3-4/0

 

4-4/0

 

4-4/0

900

2-2/0

2-3/0

2-4/0

3-3/0

 

3-4/0

4-4/0

 

4-4/0

 

 

1000

2-2/0

2-3/0

2-4/0

3-3/0

 

4-3/0

4-4/0

 

 

 

 

1250

2-3/0

2-4/0

3-3/0

4-3/0

 

4-4/0

 

 

 

 

 

1500

2-4/0

3-3/0

3-4/0

4-4/0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*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.

 

S-0007-D

 

 

 

 

 

 

 

 

 

 

OM-815 Page 7

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Contents Description OM-815Processes From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesPrincipal Safety Standards About Pacemakers EMF InformationRack Safety InformationSpecifications Specifications DescriptionSelecting a Location And Moving Rack InstallationInstalling Welding Power Source Onto Rack Duty Cycle Welding Power Source Input Power Connections400 ft Welding 10 To 60% Thru 100% Thru 100% Duty CycleCommon Work Connections Securely cover connection with proper insulating material Paralleling Welding Power Sources For SmawUndersized Welding Cables can Cause fireInput Power Connections Connecting Input Power To RackInput Voltage Maintenance & TroubleshootingRoutine Maintenance Months Electrical Service RequirementsTrouble Remedy Section TroubleshootingOverload Protection Rack TroubleCircuit Diagram For Rack Control Box Electrical DiagramMain Assembly Parts ListControl Box Control Box -1 Item Page Page Call Miller for your local Miller distributor Miller Electric Mfg. Co Owner’s Record