Miller Electric NT 456 CV, NT 456 CC manual Weld Output Terminals And Selecting Cable Sizes

S-0007-E

4-8. Weld Output Terminals And Selecting Cable Sizes

! Turn Off power before connecting to weld output terminals.

Positive Negative Terminal

		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%
	Duty				10 − 100% Duty Cycle
Amperes		Duty Cycle
	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.

4-9. 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)
		Correct Installation
! Turn off power before connecting to		1	Weld Output Terminal
weld output terminals.		2	Supplied Weld Output Terminal Nut
! Failure to properly connect weld		3	Weld Cable Terminal
cables may cause excessive heat		4	Copper Bar
and start a fire, or damage your ma-		Remove supplied nut from weld output ter-
chine.		minal. Slide weld cable terminal onto weld

803 778-B

Incorrect Installation

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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