Figure 2-2 - Package Maximum Current Consumption Summary - Gardner Denver VS200-250B Operating And Service Manual

It is mandatory that any water-cooled unit be installed in a shelter heated to
temperatures above freezing (40F, 5C).
Please refer to Section 6 of this manual for detailed instructions on the installation, operation and
maintenance of the water-cooled heat exchangers.
ELECTRICAL WIRING - The compressor package is (internally) factory wired for use with the voltage
specified on the order - it is only necessary to connect power supply and ground wires to the provided
wire terminal blocks.
Electrical shock can cause injury or death. Open main disconnect switch,
lockout and tagout before working on control box.
Gardner Denver Guidelines for proper wiring, grounding and feed power conditioning - This
compressor package is provided with a variable speed drive (VFD) to control compressor motor. The
indicated Gardner Denver guidelines for proper wiring, grounding, and feed power conditioning must be
followed in order to protect the VFD electronics. Failure to do so will void your warranty.
Electrical Wire Sizing – A certified electrician familiar with National Electric Codes and applicable local
codes shall size the electrical power wires serving the compressor package. Refer to
summary of maximum package current consumption values.
460 VOLT VS-200 and VS-250 MINIMUM COPPER SUPPLY WIRE RECOMMENDATIONS
Package
Model Input Amps
Voltage (Estimated)
VS-200 460 384.96
VS-250 460 484.96
The NEC requires that wire sizes be determined by using the appropriate multiplier for the conductor temperature rating at
ambient temperatures other than 30º C and then selecting the wire that has sufficient ampacity, after correction, to meet the
load requirements shown in the "NEC Package Amps @ 30ºC" column above. Wire ampacity is to be corrected, not "Package
Amps". Additional correction multipliers apply based on more than three conductors in one conduit. The appropriate
installation and use of 75ºC and 90ºC wire is the responsibility of the electrical professional(s) performing the installation and
must be per NEC, local and state regulations as allowed. All of the above recommended minimum wire sizes are based on all
terminal connections being rated at 75ºC minimum temperature rating and copper wire run lengths of 100 feet or less. Please
note that all UL-508A listed control panels are rated for 40ºC ambient conditions.
Figure 2-2 – PACKAGE MAXIMUM CURRENT CONSUMPTION SUMMARY
Minimum
75ºC wire
NEC Package Copper Wire
Amps at 30ºC Sized at40ºC
476.21 2 sets of 300
601.21 2 sets of 500
13-18-614
Minimum
90ºC wire
Copper Wire
Sized at 40ºC
Wires sized for 2 parallel sets of
conductors in 2 conduit (1 set in
2 sets of 250
each conduit).
Wires sized for 2 parallel sets of
2 sets of 350 conductors in 2 conduit (1 set in
each conduit).
Page 15
Figure 2-2, for a
NOTES