3-4 GROUNDING WHEN SUPPLYING A BUILDING.
FIGURE 3-4 GROUNDING W HEN SUPPLYING A BUILDING.
3
2
2
1
TIERRA
Calle plásticos No. 17, Colonia San Francisco Cuautlalpan,
Naucalpan de Juárez, Estado de México, C.P. 53569
6
1.- EARTH TERMINAL OF TEAM.
2.- LANDING CABLE. Use an insulated
copper cable # 10 AWG or greater
.
3.- LANDING DEVICE.
Ground the generator to a physical ground
system (metal pipe, metal structure), when
the generator supplies power to premises
(houses, warehouses, etc.) with wiring
system .
3-5 SELECTING THE CABLE LENGTH. (Use the cable as short as possible).
TABLE 3-1 SELECTION OF CABLES AT 120Vac
CABLE LENGTH FOR LOADS AT 120 Vca
Current
(Amp.)
Load
(Watts)
MAXIMUM PERMISSIBLE CABLE LENGTH IN Ft (m)
FOR DIFFENENTS CALIBRES*
4 AWG
6 AWG
8 AWG
10 AWG
12 AWG
14 AWG
5
7
10
15
20
25
30
35
40
45
50
600
840
1200
1800
2400
3000
3600
4200
4800
5400
6000
400 (122)
300 ( 91)
225 ( 68)
175 ( 53)
150 ( 46)
125 ( 38)
112 ( 34)
100 ( 31)
87 ( 26)
* Based on maximum valtage of 2%
400 (122)
275 ( 84)
175 ( 53)
137 ( 42)
112 ( 34)
87 ( 26)
75 ( 23)
62 ( 19)
62 ( 19)
50 ( 15)
350 (106)
250 ( 76)
175 ( 53)
112 ( 34)
87 ( 26)
62 ( 19)
50 ( 15)
50 ( 15)
37 ( 11)
225 ( 68)
150 ( 46)
112 ( 34)
75 ( 23)
50 ( 15)
37 ( 11)
37 ( 11)
137 ( 42)
100 ( 30)
62 ( 19)
37 ( 11)
30 ( 9)
100 ( 30)
62 ( 19)
50 ( 15)
30 ( 9)