ESAB Mig 300i, Instruction Manual, Page: 15 / 24

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Duty cycle
The duty cycle refers to the time as a percentage of a ten--minute period that you can weld at a cer-
tain load without overloading.
Enclosure class
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP23 is designed for indoor and outdoor use.
Application class
The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.
5 INSTALLATION
The installation must be executed by a professional.
WARNING!
This product is intended for industrial use. In a domestic environment this product may cause radio
interference. It is the user’s responsibility to take adequate precautions.
5.1 Location
Position the welding power source such that its cooling air inlets and outlets are not
obstructed.
5.2 Mains power supply
Check that the welding power source is connected to the
correct mains power supply voltage, and that it is protected by
the correct fuse size. A protective earth connection must be
made in accordance with regulations.
Rating plate with supply connection data
Recommended fuse sizes and minimum cable area
ESABMig 300i
MIG/MAG MMA
Mains voltage 400 V 3
µ
50 Hz 400 V 3
µ
50 Hz
Mains cable area mm
2
4G2.5 4G2.5
Phase current, I RMS 13 A 14 A
Fuse
Anti--surge
Type C MCB
16 A
20 A
16 A
20 A
Note! The mains cable areas and fuse sizes as shown above are in accordance with Swedish
regulations. Use the welding power source in accordance with the relevant national regulations.
Note! This welding power source is designed for connection to a four wire 230/400
volt system.
If the power source is to be used in a country with a higher mains voltage, the power
source shall be connected via a safety transformer.
GB