Weld Output Terminals And Selecting Cable Sizes; Typical Connections For Stick (Smaw) Welding - Miller Blue Thunder 253 Owner's Manual

3-6. Weld Output Terminals and Selecting Cable Sizes

Weld Output
Terminals
! !
Turn off power before Turn off power before
connecting to weld out-
put terminals.
!
Do not use worn, dam-
aged, undersized, or
poorly spliced cables. poorly spliced cables.
Negative Positive
Terminal Terminal
804 944
2
Weld cable size (mm ) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.

3-7. Typical Connections For Stick (SMAW) Welding

OM-233 381 Page 12
Total Cable (Copper) Length In Weld Circuit Not Exceeding
100 ft (30 m) Or Less
10 − 60%
Welding 60 − 100%
Duty
Amperes Duty Cycle
Cycle
100 20
150 25
200 25
250 35
150 ft 200 ft
(45 m) (60 m)
20 20 25
25 35 50
35 50 50
35 50 70
250 ft 300 ft 350 ft
(70 m) (90 m) (105 m)
10 − 100% Duty Cycle
35 50 50
50 70 90
70 90 90
90 90 120
400 ft
(120 m)
50
90
90
120
Ref. S-0007-D
804 961