Selecting Weld Cable Sizes; Remote Receptacle Information - Miller TRAILBLAZER 302 AIR PAK Owner's Manual

5-10. Selecting Weld Cable Sizes*

NOTICE − The Total Cable Length in Weld Circuit (see table below) is the combined length of both weld cables. For example, if the power source is
100 ft (30 m) from the workpiece, the total cable length in the weld circuit is 200 ft (2 cables x 100 ft). Use the 200 ft (60 m) column to determine cable
size.
Weld Output
Terminals
!
Stop engine before
connecting to weld
output terminals.
!
Do not use worn,
damaged, under-
sized, or poorly
spliced cables.
This chart is a general guideline and may not suit all applications. If cable overheats, use next size larger cable.
*
**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.
2
( ) = mm for metric use
***For distances longer than those shown in this guide, call a factory applications rep. at 920-735-4505 (Miller) or 1-800-332-3281 (Hobart).

5-11. Remote Receptacle Information

A J
K
I
B
C L N
H
M
D G
F
E
*The remaining sockets are not used.
Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit
100 ft (30 m) or Less
10 − 60% 60 − 100%
Welding
Duty Duty
Amperes
Cycle Cycle
100 4 (20) 4 (20)
150 3 (30) 3 (30)
200 3 (30) 2 (35)
250 2 (35) 1 (50)
300 1 (50) 1/0 (60)
350 1/0 (60) 2/0 (70)
400 1/0 (60) 2/0 (70)
24 VOLTS AC
115 VOLTS AC
REMOTE
OUTPUT
CONTROL
REMOTE
804 857-C
COMPRESSOR
ON/OFF
.
A complete Parts List is available at www.MillerWelds.com
Not Exceeding***
150 ft 200 ft
(45 m) (60 m)
10 − 100% Duty Cycle
4 (20) 3 (30)
2 (35) 1 (50)
1 (50) 1/0 (60)
1/0 (60) 2/0 (70)
2/0 (70) 3/0 (95)
3/0 (95) 4/0 (120)
3/0 (95) 4/0 (120)
Socket*
A 24 volts AC. Protected by supplementary protec-
tor CB4.
B Contact closure to A completes 24 volt AC
contactor control circuit and keeps engine at Run
speed in all modes.
I 115 volts AC. Protected by supplementary protec-
tor CB3.
J Contact closure to I completes 115 volts AC
contactor control circuit.
C +10 volts DC output to remote control.
D Remote control circuit common.
E 0 to +10 volts DC input command signal from
remote control.
F Current feedback: 1 volt per 100 amperes.
H Voltage feedback: 1 volt per 10 arc volts.
G Circuit common for 24 and 115 volts AC circuits.
GND
K Chassis common.
L Remote compressor on/off (select compressor
output on front panel). Grounding pin L stops com-
pressor.
250 ft 300 ft 350 ft
(70 m) (90 m) (105 m)
2 (35) 1 (50) 1/0 (60)
1/0 (60) 2/0 (70) 3/0 (95)
2/0 (70) 3/0 (95) 4/0 (120) 4/0 (120)
2x2/0
3/0 (95) 4/0 (120)
(2x70)
2x2/0 2x3/0
4/0 (120)
(2x70) (2x95)
2x2/0 2x3/0 2x3/0
(2x70) (2x95) (2x95)
2x2/0 2x3/0 2x4/0
(2x70) (2x95) (2x120)
Ref. S-0007-J 2011−07
Socket Information
OM-229 930 Page 29
400 ft
(120 m)
1/0 (60)
3/0 (95)
2x2/0
(2x70)
2x3/0
(2x95)
2x4/0
(2x120)
2x4/0
(2x120)