Miller Electric Delta-Fab manual Weld Output Terminals And Selecting Cable Sizes, Duty Cycle

S-0007-E

3-8. Weld Output Terminals And Selecting Cable Sizes

YTurn off power before connecting to weld out- put terminals.

YDo not use worn, dam- aged, undersized, or poorly spliced cables.

Negative

Stainless Steel/

Aluminum

All Other

Materials

		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 − 60%	60 − 100%			10 − 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

*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. Contact your distributor for the mm2 equivalent weld cable sizes.

3-9. Connecting Weld Output Cables

4

1

Do not place

anything between weld cable terminal and copper bar.

	2
Tools Needed:	3
3/4 in (19 mm)

803 778-B

YTurn off power before connecting to weld output terminals.

YFailure to properly connect weld cables may cause excessive heat and start a fire, or damage your ma- chine.

Correct Installation

1Weld Output Terminal

2Supplied Weld Output Terminal Nut

3Weld Cable Terminal

4Copper Bar

Remove supplied nut from weld output ter-

Incorrect Installation

minal. Slide weld cable terminal onto weld output terminal and secure with nut so that weld cable terminal is tight against copper bar. Do not place anything between weld cable terminal and copper bar. Make

sure that the surfaces of the weld cable terminal and copper bar are clean.

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