Delta 302 Owner's Manual download pdf (Page 26)

OM-223 Page 22

4-15. 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.

60 Hertz Models 300 Amp Model 450 Amp Model 650 Amp Model

Input Voltage (V) 200 230 460 575 200 230 460 575 230 460 575

Input Amperes (A) At Rated Output 48 42 21 17 72 63 32 25 96 48 38

Max Recommended Standard Fuse Rating In

Amperes

Time-Delay Fuses

60 50 25 20 90 70 40 30 110 60 45

Normal Operating Fuses 3 70 60 30 25 110 90 45 40 150 70 60

Min Input Conductor Size In AWG

8 8 10 12 4 6 8 10 3 8 8

Max Recommended Input Conductor Length

In Feet (Meters)

111

(34)

147

(45)

393

(120)

374

(114)

163

(50)

142

(43)

366

(112)

379

(115)

166

(51)

228

(70)

357

(109)

Min Grounding Conductor Size In AWG

8 10 10 12 6 8 10 10 6 8 10

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.

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 Hertz Models 300 Amp Model 450 Amp Model 650 Amp Model

Input Voltage (V) 380 400 440 380 400 440 380 400 440

Input Amperes (A) At Rated Output 27 25 23 39 37 33 58 54 50

Max Recommended Standard Fuse Rating In Am-

peres

Time-Delay Fuses

30 30 25 45 45 40 70 60 60

Normal Operating Fuses 3 40 35 35 60 50 50 90 80 80

Min Input Conductor Size In AWG

10 10 10 8 8 8 6 6 6

Max Recommended Input Conductor Length In Feet

(Meters)

268

(82)

297

(90)

359

(109)

250

(76)

277

(84)

335

(102)

243

(74)

269

(82)

325

(99)

Min Grounding Conductor Size In AWG

10 10 10 10 10 10 8 8 8

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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Delta 302 Owner's Manual Page 26

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