Miller Thunderbolt 225 Owner's Manual download pdf (Page 21)

OM-316 Page 17

4-7. Weld Output Cables

. For weld output cable replacements or extensions, contact your Factory Authorized Service Agent.

4-8. Electrical Service Guide

Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-

tions are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source.

50/60 Hz Single

Phase

Input Voltage (V) 220 230

Input Amperes (A) At Rated Output [70]

47.5

[67]

Max Recommended Standard Fuse Rating In Amperes

Time-Delay Fuses

[90] 50 [80]

Normal Operating Fuses

[110] 70 [100]

Min Input Conductor Size In AWG

[8]

[10]

Max Recommended Input Conductor Length In Feet (Meters) [75 (23)]

87 (26)

[82 (25)]

Min Grounding Conductor Size In AWG

[8] 12 [10]

[ ] Electrical Service Requirements For 300/200 AC/DC And 300 AC Models

Reference: 2008 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

310.16. 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.

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Miller Thunderbolt 225 Owner's Manual Page 21