Miller Electric Inverter Rack manual Connecting Input Power To Rack

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3-9. Connecting Input Power To Rack

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Have only qualified persons make this installation.

YTurn Off welding power sources before inspecting or installing rack.

1Control Box Open access door.

2Line Disconnect Device Of Proper Rating

3Input Conductors

4Grounding Conductor

Select size and length using Sec- tion 3-10or 3-11.Conductors must be able to carry the combined am- perage draw of all welding power sources mounted on the rack. Con- ductor insulation must comply with national, state, and local electrical codes.

5 Strain Relief Connector

Insert conductors through strain relief.

6Input Terminal Block

7Line Terminals

8Ground Terminal

Connect grounding conductor to ground terminal first. Then connect input conductors to line terminals.

Close control box access door.

Install grounding conductor and in- put conductors in conduit or equiv- alent to deenergized line discon- nect device.

Connect grounding conductor first, then line input conductors.

Be sure grounding conductor goes to an earth ground.

9 Overcurrent Protection

Select type and size using Section 3-10or 3-11.Install into deen- ergized line disconnect device (fused disconnect switch shown).

ST-801 702 / Ref. ST-801 703

OM-818 Page 16

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Contents Description OM-818Processes From Miller to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Identifie un message de sécurité particulier − Consignes DE Sécurité − À Lire Avant UtilisationLE Soudage peut causer un incen- die ou une explosion LES Particules Projetées peu- vent blesser les yeuxLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques Specifications For Racks Used With XMT 304/EX 300 Models RackMovement Dimensions And WeightSelecting a Location For XMT 456 and Invision 456 Models Installing Welding Power Source Onto RackFor XMT 304/EX 300 Models Welding Power Source Input Power Connections Input Conductors Power Circuit Breaker TerminalsSelecting Cable Sizes ARC Welding can cause Electromagnetic InterferenceCommon Work Connections Position of the welding cable connec- tors while welding Paralleling Welding Power Sources For SmawSecurely cover connection with proper insulating material Connecting Input Power To Rack Electrical Service Guide For XMT 304 4-Racks Electrical Service Guide For XMT 304/EX 300 6-Racks− Maintenance & Troubleshooting Troubleshooting Overload Protection− Electrical Diagrams 184 139-B − Parts List Service SupportOwner’s Record Miller Electric Mfg. Co