OM-286504 Page 54
11-3. Grounding When Supplying Building Systems
OM-4419 Page 1
GND/PE
1 2
2
3
1 Equipment Grounding Terminal
2 Grounding Cable
Use #8 AWG or larger insulated copper wire.
3 Ground Device
F
Use ground device as stated in electri-
cal codes.
Ground generator to system earth
ground if supplying power to a
premises (shop, farm) wiring
system.
Also see AWS Safety & Health Fact
Sheet No. 29, Grounding of Port-
able And Vehicle Mounted Welding
Generators.
11-4. How Much Power Does Equipment Require?
OM-4419 Page 1
VOLTS 115
4.5
50/60
AMPS
Hz
1
2
3
3
1 Resistive Load
A light bulb is a resistive load and requires a
constant amount of power.
2 Non-Resistive Load
Equipment with a motor is a non-resistive
load and requires approximately six times
more power while starting the motor than
when running (see Section 11-8).
3 Rating Data
Rating shows volts and amperes, or watts re-
quired to run equipment.
Amperes x Volts = Watts
Example 1: If a drill uses 4.5 amperes at 115
volts, calculate its running power require-
ment in watts.
4.5 A x 115 V = 520 W
The load applied by the drill is 520 watts.
Example 2: If three 200 watt flood lamps are
used with the drill from Example 1, add the
individual loads to calculate total load.
(3 x 200W) + 520 W = 1120 W
The total load applied by the three flood
lamps and drill is 1120 watts.
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