Outback Power Systems 80 Wire Distance Chart, 12V PV Array 16v Vmp, 24V PV Array 32v Vmp

29. Wire Distance Chart

To meet NEC compliance (North America), the largest PV array that can be connected to the FLEXmax 80 must have a rated short-circuit current of 64 amps or less The following charts show the maximum distance of various gauge two-conductor copper wire from the PV array to the FLEXmax 80 with a

1.5% maximum voltage drop. Temperature and conduit fill corrections may be required. Using a higher voltage PV array with a low voltage battery system allows you to use a much smaller wire size or go up to 5 times as far with the same gauge wire.

(The figures below assumes 2 conductor copper wire and allows for a 1.5% voltage drop)

12V PV ARRAY (16v Vmp)

WIRE GAUGE		#8	#6	#4	#3	#2	#1/0	#2/0	#4/0
AMPS	10	15	24	39	49	62	98	124	197
	20	8	12	19	24	31	49	62	99
	30	5	8	13	16	21	33	41	66
	40	4	6	10	12	15	25	31	49
	50	3	5	8	10	12	20	25	39
	60	3	4	6	8	10	16	21	33
	70	2	3	6	7	9	14	18	28

24V PV ARRAY (32v Vmp)

WIRE GAUGE		#8	#6	#4	#3	#2	#1/0	#2/0	#4/0
AMPS	10	31	49	78	98	124	197	248	395
	20	15	24	39	49	62	98	124	197
	30	10	16	26	33	41	66	83	132
	40	8	12	19	24	31	49	62	99
	50	6	10	16	20	25	39	50	79
	60	5	8	13	16	21	33	41	66
	70	4	7	11	14	18	28	35	56

METRIC #8…8.37mm2 #6…13.30mm2 #4…21.15mm2 #3…26.7mm2 #2…33.6mm2 #1/0…53.5mm2 #2/0…67.4mm2 #4/0…107mm2

36V PV ARRAY (48v Vmp)

WIRE GAUGE		#8	#6	#4	#3
AMPS	10	46	73	117	147
	20	23	37	58	73
	30	15	24	39	49
	40	12	18	29	37
	50	9	15	23	29
	60	8	12	19	24
	70	7	10	17	21

#2	#1/0	#2/0	#4/0
186	295	372	592
93	148	186	296
62	98	124	197
46	74	93	148
37	59	74	118
31	49	62	99
27	42	53	85

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