Daihen OTC Welbee Inverter W400, Owner'S Manual

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4-1
Chapter 4 Connection
Chapter 4 Connection
This chapter explains the procedure for connecting the welding power source.
4.1 Precautions for Connection Procedure and
Grounding
This section explains the precautions for connection and grounding procedure. For protection from
serious injury or fire, observe the following:
For protection from electric shock, observe the following points:
• Wear protective equipment such as protective gloves, safety shoes and long-sleeve
clothes.
• Do not touch the input and output terminals and the internal live electrical parts of the
welding power source.
• Have a qualified electrical engineer ground the case of the welding power source and
base metal or jig electrically connected in accordance with local regulation.
• Make sure to cut the input power with the disconnect switch in the box connected to the
welding power source. Do not turn on the input power before confirming the completion
of connection.
• Use a cable with specified thickness. Do not use damaged cable or cable with stripped
conductor.
• Ensure to tighten and insulate the connection of cables.
• Securely attach the case and cover of the welding power source after connecting the
cables.
• When extending the cable, use only the specified extension cable. Do not extend the
cable by connecting the round terminals.