Operation
GV 7000A/7003A
wc_tx000273gb.fm
18
4.5
Use of Extension Cords
When a long extension cord is used to connect an appliance or tool to
the generator, a voltage loss occurs—the longer the cord, the greater
the voltage loss. This results in less voltage being supplied to the
appliance or tool and increases the amount of current draw or reduces
performance. A cord with a larger cross section will reduce the voltage
loss.
CAUTION:
Operating equipment at low voltage can cause it to
overheat.
Use only tough rubber-sheathed cable in accordance with IEC 245-4.
Damaged cords can cause electric shock. Electric shock can cause
serious injury or death. DO NOT use worn, bare, or frayed cords.
Replace damaged cords immediately.
Do not exceed the rating of the cord.
Contact the cord manufacturer if in doubt about cord use.
Choose the cord size from the
Minimum Extension Cord Size Table
or
calculate minimum cord size using the
Minimum Extension Cord Size
Graph
. The X axis of the graph represents A x m (Ampere x meter)
values. The Y axis represents wire size in mm
2
. Multiply the operating
current for the load in amps (A) by the desired extension cord length in
meters (m). Find the result along the X axis. Move up the graph until
you reach the appropriate sloped line for your application. Move to the
Y axis; this is the recommended minimum cord size.
Example:
For a 3-phase, 400V application, if the operating current for the load is
15 A, and the desired extension cord length is 100 m, then:
15 A x 100 m = 1500 A x m.
1500 A x m = 2.5 mm
2
.
WARNING
