Schneider Electric Xantrex XW Guide d'installation Page 107

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Wiring
975-0239-01-01 4–15
This manual for use by qualified personnel only
Maximum One-way Distance and Wire Size
Refer to Table 4-4 or Table 4-5 and find the maximum current in the left column,
and the one-way distance from the PV array to the Xantrex XW SCC (or the
distance from the Xantrex XW SCC to the battery) on the same line, then read the
wire size required at the top of the column.
For equivalent metric wire sizes, consult a local electrician or certified installer.
Table 4-4 One-Way Wire Distance and Wire Size for a 24 Vdc System
Maximum one-way wire distance for a < 3% voltage drop assuming 60 Adc charging current
For 24 Vdc systems
Distance in feet (meters) Distance in feet (meters)
a
a.These wire sizes are not approved by UL to be installed in the controller, but may be used external to the controller
(using a splicer block) to reduce voltage drop and improve performance.
Amps 12 AWG 10 AWG 8 AWG 6 AWG 4 AWG 3 AWG 2 AWG 1 AWG 1/0 AWG
10 17.6
(5.36)
28.0
(8.54)
44.4
(13.54)
70.6
(21.52)
112.2
(34.2)
141.8
(43.22)
179.2
(54.62)
225.0
(68.58)
283.4
(86.38)
12 14.6
(4.46)
23.2
(7.08)
37.0
(11.28)
58.8
(17.92)
93.4
(18.46)
118.2
(36.02)
149.2
(45.48)
187.4
(57.12)
236.2
(72.00)
14 12.6
(3.84)
20.0
(6.10)
31.8
(9.70)
50.4
(15.36)
80.2
(24.44)
101.2
(30.84)
128.0
(39.02)
160.8
(49.02)
202.4
(61.70)
16 11.0
(3.36)
17.4
(5.30)
27.8
(8.48)
44.2
(13.48)
70.0
(21.34)
88.6
(27.0)
112.0
(34.14)
140.6
(42.86)
177.2
(54.02)
18 9.8 (2.98) 17.6
(4.76)
24.8
(7.56)
39.2
(11.94)
62.4
(19.02)
78.8
(24.02)
99.6
(30.36)
125.0
(38.10)
157.4
(47.98)
20 8.8 (2.68) 14.0
(4.26)
22.2
(6.76)
35.2
(10.72)
56.0
(17.06)
70.8
(21.58)
89.6
(27.32)
112.4
(34.26)
141.8
(43.20)
25 11.2
(3.42)
17.8
(5.42)
28.2
(8.60)
44.8
(13.66)
56.6
(17.26)
71.6
(21.82)
90.0
(27.44)
113.4
(34.56)
30 9.4 (2.86) 14.8
(4.52)
23.6
(7.20)
37.4
(11.4)
47.2
(14.38)
59.8
(18.22)
75.0
(22.86)
94.4
(28.78)
35 12.8
(3.90)
20.2
(6.16)
32.0
(9.76)
40.4
(12.32)
51.2
(15.6)
64.2
(19.56)
81.0
(24.68)
40 11.2
(3.42)
17.6
(5.36)
28.0
(8.54)
35.4
(10.78)
44.8
(13.66)
56.2
(17.12)
70.8
(24.58)
45 15.6
(4.76)
25.0
(7.62)
31.4
(9.58)
39.8
(12.14)
50.0
(15.24)
63.0
(19.20)
50 14.2
(4.32)
22.4
(6.82)
28.4
(8.66)
35.8
(10.92)
45.0
(13.72)
56.6
(17.26)
60 12.6
(3.84)
18.6
(5.66)
23.6
(7.20)
29.8
(9.08)
37.4
(11.4)
47.2
(14.38)
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