Hobart Welding Products 302, 452 manual Electrical Service Guide

3-11. Electrical Service Guide

60 Hertz Models		300 Amp Model				450 Amp Model
Input Voltage	200	230	460	575	200	230	460	575
Input Amperes At Rated Output	69	60	30	24	104	90	45	36
Max Recommended Standard Fuse Rating In Amperes 1
Time-Delay 2	80	70	35	30	125	110	50	45
Normal Operating 3	100	90	45	35	150	125	70	50
Min Input Conductor Size In AWG/Kcmil	4	6	10	10	2	3	8	8
Max Recommended Input Conductor Length In Feet (Me-	225	203	367	573	173	191	287	448
ters)	(69)	(62)	(112)	(175)	(53)	(58)	(87)	(137)
Min Grounding Conductor Size In AWG/Kcmil	8	8	10	10	6	6	8	10

Reference: 1999 National Electrical Code (NEC)

1Consult factory for circuit breaker applications.

2“Time-Delay” fuses are UL class “RK5” .

3“Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and above).

50 Hertz Models		300 Amp Model				450 Amp Model
Input Voltage	380		400	440	380	400	440	520
Input Amperes At Rated Output	36		34	31	52.5	51	46	38
Max Recommended Standard Fuse Rating In Amperes 1
Time-Delay 2	45		40	35	60	60	50	45
Normal Operating 3	50		50	45	80	80	70	60
Min Input Conductor Size In AWG/Kcmil	8		8	8	6	6	8	8
Max Recommended Input Conductor Length In Feet (Me-	370		409	495	342	379	303	423
ters)	(113)		(125)	(151)	(104)	(115)	(92)	(129)
Min Grounding Conductor Size In AWG/Kcmil	10		10	10	8	8	8	10
Reference: 1999 National Electrical Code (NEC)

1Consult factory for circuit breaker applications.

2“Time-Delay” fuses are UL class “RK5” .

3“Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and above).

OM-277 Page 18