Hobart Welding Products 250 Electrical Service Guide, Hz Single, Input Voltage

3-12. Electrical Service Guide

	60 Hz Single
		Phase
Input Voltage	200		230
Input Amperes At Rated Output	40		35
Max Recommended Standard Fuse Rating In Amperes
Circuit Breaker 1, Time-Delay 2	50		40
Normal Operating 3	60		50
Min Input Conductor Size In AWG 4	8		10
Max Recommended Input Conductor Length In Feet (Meters)	108		94
	(33)		(29)
Min Grounding Conductor Size In AWG 4	10		10

Reference: 2005 National Electrical Code (NEC) (including article 630)

1Choose a circuit breaker with time-current curves comparable to a Time Delay Fuse.

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).

4Conductor 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.

YCaution: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard. These recommendations are for a dedicated branch circuit that applies to the rated output and duty cycle of the welding power source.

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