Miller Multimatic 200, Owner'S Manual

Page: 26 / 68

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A complete Parts List is available at www.MillerWelds.com
OM-253392 Page 22
5-9. Selecting 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 Cable Size** and Total Cable (Copper) Length in Weld Circuit
Not Exceeding***
100 ft (30 m) or Less
150 ft
(45 m)
200 ft
(60 m)
250 ft
(70 m)
300 ft
(90 m)
350 ft
(105 m)
400 ft
(120 m)
Welding
Amperes
10 − 60%
Duty
Cycle
AWG (mm
2
)
60 − 100%
Duty Cycle
AWG (mm
2
)
10 − 100% Duty Cycle
AWG (mm
2
)
100 4 (20) 4 (20) 4 (20) 3 (30) 2 (35) 1 (50) 1/0 (60) 1/0 (60)
150 3 (30) 3 (30) 2 (35) 1 (50) 1/0 (60) 2/0 (70) 3/0 (95) 3/0 (95)
200 3 (30) 2 (35) 1 (50) 1/0 (60) 2/0 (70) 3/0 (95) 4/0 (120) 4/0 (120)
*
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.
( ) = mm
2
for metric use.
***For distances longer than those shown in this guide, see AWS Fact Sheet No. 39, Welding Cables, available from the American Welding
Society at http://www.aws.org.
Ref. S-0007-M 2017 − 08
5-10. Electrical Service Guide
Elec Serv 2014 − 01
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated circuit sized for the rated output and duty cycle of the welding power source.
In dedicated circuit installations, the National Electrical Code (NEC) allows the receptacle or conductor rating to be less than the rating
of the circuit protection device. All components of the circuit must be physically compatible. See NEC articles 210.21, 630.11, and
630.12.
.
Actual input voltage should not exceed

10% of indicated required input voltage. If actual input voltage is outside of this range, output may not
be available.
50/60 Hz
Single Phase
50/60 Hz
Single Phase
Input Voltage (V) 230 120
Input Amperes (A) At Rated Output 17.7
A 15 or 20
ampere
individual
branch circuit
protected by
time-delay
fuses or circuit
breaker is re-
quired.
See Section
5-12
Max Recommended Standard Fuse Rating In Amperes
1
Time-Delay Fuses
2
20
Normal Operating Fuses
3
25
Min Input Conductor Size In AWG
4
14
Max Recommended Input Conductor Length In Feet (Meters) 65 (20)
Min Grounding Conductor Size In AWG
4
14
Reference: 2014 National Electrical Code (NEC) (including article 630)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 “Time-Delay” fuses are UL class “RK5” . See UL 248.
3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps and
above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.15(B)(16). If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable
requirements.
5-11. Input Power Extension Cord Data
Use extension cord only for temporary wiring. Remove extension cord immediately after completing the project.
Input 17 2018-11
Cord Type Minimum Conductor Size Number of Conductors Maximum Cord Length
Heavy Duty (Hard Usage) 12 AWG (4 mm
2
) 3 50 ft (15 m)
.
Read OSHA Standard 1910.334 for more information on the use of cord and plug connected equipment.
Read National Electrical Code (NEC) Article 590 for more information on temporary wiring.