Remove Rear Panel And Stub-Up Cover; Typical Load Leads And Control Wiring In Stub-Up; Customer Load Wiring - Generac Power Systems D3.4L G16 Extended Tank Installation Manuallines

Electrical System
Remove Rear Panel and Stub-Up
Cover
1. See Figure 5-1. Remove six screws with nylon
washers to release rear panel (A) from enclosure.
For best results, rotate left side of panel outward
away from enclosure before disengaging right side.
NOTE: Disconnect wire harness from switch located in
the customer access assembly housing. This will allow
door to be completely removed.
Figure 5-1. Remove Rear Panel and Stub-Up Cover
2. Remove four screws with nylon washers to release
fascia from control panel.
3. The stub-up cover (B) and five screws with flat
washers are shipped loose and found inside the
enclosure.
Table 5-1. Frame Breakers
Frame Generac 225
Breaker AF 2 Pole
Range 125A-200A
Wire Type
Wire
Temperature
Rating
Lug AWG 6-350 kcmil (1)
Range
(Number of
Conductors)
NOTE: Lug torque specifications are located on breaker
data tag.
20
A
Generac 225 Generac 400 Generac 400
AF 3 Pole AF 2 Pole AF 3 Pole
50A-200A 225A-400A 225A-400A
Cu/Al
167 °F
(75 °C)
1/0-250 kcmil 1/0-250 kcmil
(2)
4-600 kcmil (1)
Typical Load Leads and Control
Wiring in Stub-Up
NOTE: The illustration in
See installation drawings for unit-specific details.
NOTE: See 300.3(C) and Article 725 in the NEC for rout-
ing of Class 1 control wires and power wires. The instal-
lation of a single conduit is permitted.
A
B
A Load leads
B Control wiring
001760
Figure 5-2. Load Leads and Control Wiring in Stub-

Customer Load Wiring

Customer load wiring consists of single-phase or three-
phase connections between generator main line circuit
breaker (MLCB) and transfer switch. The wiring connects
to lugs E1, E2, E3 (if three-phase on MLCB), neutral, and
equipment ground at generator and runs to correspond-
ing lugs in transfer switch. All load wires, neutral, and
ground should be marked and terminated in correct lugs
in transfer switch. Verify all wiring is correctly mounted
and terminated at the appropriate connection points in
both the generator and transfer switch. For general infor-
mation regarding wire type, temperature rating, size
range, and wire lug torque specifications, see
(2) Always see NEC tables for specific requirements.
or
NOTE: For three-phase applications, use phase rotation
meter to verify generator phase rotation matches rotation
of utility.
NOTE: For three-phase, delta configured alternators
(voltage code J) the second leg (N2) must be bonded to
all second legs in the entire system.
See Installation Drawings
Installation Guidelines for Protector Diesel Generators
Figure 5-3 is for reference only.
C
C Stub-ups
—
Up (Typical)
for more information.
B
C
001761
—
Table 5-1.