4094-00
60708-162
9
A.C. ELECTRICAL
CONNECTIONS
NOTICE - CLASS 1 WIRING METHODS ARE TO BE USED FOR
ALL FIELD WIRING CONNECTIONS TO TERMINALS OF A
CLASS 2 CIRCUIT
Note: This symbol always indicates ground where shown.
All wiring must be completed in accordance with the Nation
Electric Code as well as any state or local codes.
You must pay particular attention to wire size requirement for
the amperage of service you are dealing with. The table below
provides you guidance on wire sizing based on both wire type
and amperage. Wire amperages have been derated for 40
o
C
ambient temperatures operation.
*************
***** WARNING *****
*************
A main line circuit breaker has been provided inside the
generator housing. During all wiring installations make
sure the breaker is in the OFF position and the generator
operation switch is in the OFF position.
Neutral Lugs - DE20 has 100 amp neutral lugs. These lugs are
bonded to ground are provided for you to connect your neutral
wires to, from the transfer switch or load distribution center. The
lugs will accommodate #12 AWG to #1/0 Awg and should be
torqued to 50 in. lbs. The DE30 - DE65 & DE90 480 volt have
225 AMP neutral lugs and will accommodate #4 AWG to 300 MCM
and should be torqued to 250 in. lbs. The DE65 single phase and
DE90 except the 480 volt units have a 400 amp neutral block.
The 400 amp terminal block lugs will handle wire sizes #1 AWG to
400 MCM and should be torqued to 300 in. lbs.
Generator Circuit Breaker, This circuit breaker provides overload
protection for the generator. Your power feeds from the load
panel will connect to the open lugs on the circuit breaker. The
generator power feeds have already been wired into one set of
lugs.
The table below gives you the circuit breaker size, lug wire sizes
and torque specication. (see the actual breaker for additional
information and restrictions)
kW Voltage PH Amp Wire Capability Lug Torque
20 120/240 1 85 #12 AWG -2/0 AWG 50 in lbs
20 120/208 3 70 #12 AWG -2/0 AWG 50 in lbs
20 120/240 3 70 #12 AWG -2/0 AWG 50 in lbs
20 277/480 3 30 #14 - #1/0 AWG 80 in lbs
kW Voltage PH Amp Wire Capability Lug Torque
30 120/240 1 125 #12 AWG -2/0 AWG 50 in lbs
30 120/208 3 100 #12 AWG -2/0 AWG 50 in lbs
30 120/240 3 100 #12 AWG -2/0 AWG 50 in lbs
30 277/480 3 45 #14 - #1/0 AWG 80 in lbs
kW Voltage PH Amp Wire Capability Lug Torque
45 120/240 1 175 #4 AWG - 300 MCM 250 in lbs
45 120/208 3 150 #4 AWG - 300 MCM 250 in lbs
45 120/240 3 150 #4 AWG - 300 MCM 250 in lbs
45 277/480 3 70 #14 - #1/0 AWG 80 in lbs
kW Voltage PH Amp Wire Capability Lug Torque
65 120/240 1 250 #1 AWG - 600 MCM 375 in lbs
65 120/208 3 225 #4 AWG - 300 MCM 250 in lbs
65 120/240 3 225 #4 AWG - 300 MCM 250 in lbs
65 277/480 3 100 #14 - #1/0 AWG 120 in lbs
kW Voltage PH Amp Wire Capability Lug Torque
90 120/240 1 350 #1 AWG - 600 MCM 375 in lbs
90 120/208 3 300 #1 AWG - 600 MCM 375 in lbs
90 120/240 3 300 #1 AWG - 600 MCM 375 in lbs
90 277/480 3 125 #14 - #3/0 AWG 120 in lbs
Minimum Conductor Sizes between the Generator and the load.
Based on wire type and temperature rating. Wire has been
derated for 40
o
C ambient temperatures.
Cu Conductor Al Conductor
C/B Wire Temperature Rating
kW Voltage PH Amp 75
0
C 90
0
C 75
0
C 90
0
C
20 120/240 1 85 #3 AWG #4 AWG #1 AWG #2 AWG
20 120/208 3 70 #4 AWG #6 AWG #3 AWG #4 AWG
20 120/240 3 70 #4 AWG #6 AWG #3 AWG #4 AWG
20 277/480 3 30 #8 AWG #8 AWG #8 AWG #8 AWG
30 120/240 1 125 1/0 AWG #1 AWG 3/0 AWG 2/0 AWG
30 120/208 3 100 #2 AWG #3 AWG 1/0 AWG #1 AWG
30 120/240 3 100 #2 AWG #3 AWG 1/0 AWG #1 AWG
30 277/480 3 45 #6 AWG #8 AWG #4 AWG #6 AWG
45 120/240 1 175 3/0 AWG 2/0 AWG 250 MCM 4/0 AWG
45 120/208 3 150 2/0 AWG 1/0 AWG 3/0 AWG 2/0 AWG
45 120/240 3 150 2/0 AWG 1/0 AWG 3/0 AWG 2/0 AWG
45 277/480 3 70 #4 AWG #4 AWG #2 AWG #3 AWG
65 120/240 1 250 300 MCM 250 MCM 500 MCM 350 MCM
65 120/208 3 225 250 MCM 4/0 AWG 400 MCM 300 MCM
65 120/240 3 225 250 MCM 4/0 AWG 400 MCM 300 MCM
65 277/480 3 100 #2 AWG #3 AWG 1/0 AWG #1 AWG
90 120/240 1 350 600 MCM 500 MCM (2) 250 600 MCM
90 120/208 3 300 500 MCM 350 MCM (2) 4/0 500 MCM
90 120/240 3 300 500 MCM 350 MCM (2) 4/0 500 MCM
90 277/480 3 125 1/0 AWG #1 AWG 3/0 AWG 2/0 AWG
For additional information on wire sizing refer to table 310-16 of
the National Electrical Code ANSI/NFPA 70..
For additional information on wire sizing refer to table 310-16 of
the National Electrical Code ANSI/NFPA 70.
Ground Lug, These ground lugs are bonded to ground and have
a neurtal to gound bond installed. They are provided for you
to connect your ground wire to. The lugs on the 45 kW through
90 kW will handle wire sizes #6 AWG to 300 MCM and should
be torqued to 250 in. lbs. The lugs on the 20 and 30 kW will
accommodate #10 AWG to 2/0 AWG and should be torqued to
200 in. lbs.
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