Hobart Welding Products OM-945 manual Selecting Extension Cord Use Shortest Cord Possible

12-11. Selecting Extension Cord (Use Shortest Cord Possible)

Cord Lengths for 120 Volt Loads
If unit does not have GFCI receptacles, use GFCI-protected extension cord.
			Maximum Allowable Cord Length in ft (m) for Conductor Size (AWG)*
Current
	Load (Watts)	4			6		8	10	12	14
(Amperes)
5	600					350	(106)	225 (68)	137 (42)	100 (30)
7	840			400	(122)	250 (76)		150 (46)	100 (30)	62 (19)
10	1200	400 (122)		275 (84)		175 (53)		112 (34)	62 (19)	50 (15)
15	1800	300 (91)		175 (53)		112 (34)		75 (23)	37 (11)	30 (9)
20	2400	225 (68)		137 (42)		87	(26)	50 (15)	30 (9)
25	3000	175 (53)		112 (34)		62	(19)	37 (11)
30	3600	150 (46)		87	(26)	50	(15)	37 (11)
35	4200	125 (38)		75	(23)	50	(15)
40	4800	112 (34)		62	(19)	37 (11)
45	5400	100 (30)		62	(19)
50	6000	87 (26)		50	(15)
*Conductor size is based on maximum 2% voltage drop
Cord Lengths for 240 Volt Loads
If unit does not have GFCI receptacles, use GFCI-protected extension cord.
			Maximum Allowable Cord Length in ft (m) for Conductor Size (AWG)*
Current
	Load (Watts)	4			6		8	10	12	14
(Amperes)
5	1200					700	(213)	450 (137)	225 (84)	200 (61)
7	1680			800	(244)	500	(152)	300 (91)	200 (61)	125 (38)
10	2400	800 (244)		550	(168)	350	(107)	225 (69)	125 (38)	100 (31)
15	3600	600 (183)		350	(107)	225 (69)		150 (46)	75 (23)	60 (18)
20	4800	450 (137)		275 (84)		175 (53)		100 (31)	60 (18)
25	6000	350 (107)		225 (69)		125 (38)		75 (23)
30	7000	300 (91)		175 (53)		100 (31)		75 (23)
35	8400	250 (76)		150 (46)		100 (31)
40	9600	225 (69)		125 (38)		75	(23)
45	10,800	200 (61)		125 (38)
50	12,000	175 (53)		100 (31)

*Conductor size is based on maximum 2% voltage drop

OM-945 Page 48