11
Grounding
WARNING
• Failure to properly ground the unit could result in
death or serious injury. Be sure to properly ground
the unit before operation.
1. Using a mallet, install a grounding rod (
D
) firmly
into the ground, less than 5 feet (1.5 m) from the
unit’s grounding terminal (
E
).
2. Connect the grounding rod cable to the grounding
terminal.
E
D
Selecting Cable
• Select a cable (
F
) with sufficient diameter by
considering the permissible current on the cable
and the distance from the generator to the load (
G
).
• If the current flowing to the load exceeds the
permissible current of the cable, resultant
overheating may burn the cable. Similarly, if the
cable is too small in thickness to the length, the
input voltage to the load will fall to cause the load
input power to drop, as a result, the performance of
the machine cannot be displayed.
F
G
• Below is a simplified three-phase three-wire formula
to seek voltage drop or cross-sectional area of
the cable from cable length and working current.
Select such a cable length and thickness so that the
voltage drop will remain less than 5%.
Output
system
Voltage
drop
Cross-
Sectional
Area of
Cable
e: Voltage drop
(V)
e¹: Voltage
drop between
outside line
or one line of
each phase
and neutral line
A: Cable
thickness
(mm²)
L: Cable length
(m)
I: Working
current (A)
Three-
phase
3-wire Type
e = 30.8
x L x I /
1000 x A
A = 30.8
x L x I /
1000 x e
Three-
phase
4-wire Type
e = 17.8
x L x I /
1000 x A
A = 30.8
x L x I /
1000 x e¹
• The following tables show the relations between
the cable length and the cable thickness (nominal
cross-sectional area) suited to the working current.
(Based on the condition that working voltage is 200
V, with voltage drop of 10V.)
Single-Conductor Cable (Unit: in² (mm²))
Length
(ft (m)) /
Current
164
(50)
246
(75)
328
(100)
410
(125)
492
(150)
656
(200)
50A
0.01
(8)
0.02
(14)
0.03
(22)
0.03
(22)
0.05
(30)
0.06
(38)
100A
0.02
(22)
0.05
(30)
0.06
(38)
0.08
(50)
0.08
(50)
0.09
(60)
150A
0.06
(38)
0.06
(38)
0.08
(50)
0.09
(60)
0.12
(80)
0.16
(100)
Go
to
Discount-Equipment.com
to
order
your
parts
Содержание Maxi-Power MP65-8B1
Страница 8: ...7 I A H B E G C F D K J G o to Discount Equipm ent com to order your parts ...
Страница 39: ...38 ALLMAND COM Wiring Diagram Generator G o to Discount Equipm ent com to order your parts ...
Страница 40: ...39 Engine G o to Discount Equipm ent com to order your parts ...
Страница 41: ...40 ALLMAND COM G o to Discount Equipm ent com to order your parts ...
Страница 44: ...43 Addendum B Tire Safety Information G o to Discount Equipm ent com to order your parts ...
