Generac Power Systems 0043735 Method, Grounding the Generator, Generator AC Neutral Connections

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Section 2 — Installation

Guardian Liquid-cooled 40 kW Generator

Figure 2.1 – Basic Standby Electric System

DANGER

 

2.2EMERGENCY CIRCUIT ISOLATION

METHOD

This prevents overloading the generator by keeping elec- trical loads below the wattage/amperage capacity of the generator. If the generator is powering only critical loads, within its wattage/amperage capacity, during util- ity power outages, consider using the emergency circuit isolation method.

Critical electrical loads are grouped together and wired into a separate “Emergency Distribution Panel.” Load circuits powered by that panel are within the wattage/amperage capacity of the generator set. When this method is used, it is difficult to overload the gener- ator. The transfer switch must meet the following requirements:

It must have an ampere rating equal to or greater than the total amperage rating of the emergency dis- tribution panel circuit.

It must be installed between the building’s main distri- bution panel and the emergency distribution panel.

2.3TOTAL CIRCUIT ISOLATION METHOD

When a generator capable of powering all electrical loads in the circuit is to be installed, use the “Total Circuit Isolation Method.” It is possible for the genera- tor to be overloaded when this isolation method is employed. The following apply to the transfer switch in this type of system.

Ampere rating of the transfer switch must be equal to or greater than the ampere rating of the normal incoming utility service.

The transfer switch must be installed between the utility service entrance and the building distribution panel.

2.4GROUNDING THE GENERATOR

The National Electrical Code requires the frame and external electrically conductive parts of this equipment to be properly connected to an approved earth ground and/or grounding rods. For that purpose, a GROUND LUG (Figure 2.2) is provided on the generator mounting base. Consult a qualified electrician for grounding requirements in your area. Grounding procedures must meet local regulations.

Do not connect the ground wire to any pipe that carries a flammable or explosive substance – FIRE or an EXPLOSION may result.

Proper grounding helps protect personnel against electri- cal shock in the event of a ground fault condition in the generator or in connected electrical devices. In addition, grounding helps dissipate static electricity that often builds up in ungrounded devices.

Figure 2.2 – Generator Grounding Lug (typical)

2.5GENERATOR AC NEUTRAL

CONNECTIONS

Generac uses an UNGROUNDED AC neutral. Grounding is recommended only at the main service entrance.

2.6TRANSFER SWITCH START SIGNAL CONNECTIONS

‹2.6.1 PRE-PACKAGED TYPE SWITCH

Connect the six signal wires from the automatic trans- fer switch to the engine generator control, which is located on the upper right side and inside the lower control panel. Match wires 23, 194, N1, N2, T1 and T2 in the transfer switch to the corresponding wires on the terminal strip in the lower panel. The conductors for these wires should be in a seperate conduit from the main AC output wires. If the control wires are run in the same conduit, the control wires must be a shielded cable.

‹2.6.2 “GTS” Type Engineered Switch

Connect the two-wire start signal from the automatic transfer switch to the automatic start connection, which is located in the right hand corner inside the lower panel. Match wires 178 and 183 in the transfer switch to 178 and 183 on the terminal strip in the control panel. The conductors for the two-wire start circuit must be in their own conduit. If the control wires are run in the same conduit, the control wires must be a shielded cable.

Generac® Power Systems, Inc. 9

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Contents 0046262, 0046263 Authorized Dealer Location IntroductionIntroduction Inside Front Cover General Hazards Electrical Hazards Generator AC Connection Systems Prepackaged Transfer SwitchUNPACKING/INSPECTION GeneratorEngine Protective Devices SpecificationsMain Circuit Breaker ‹ 1.9.1 Conversion to LP GAS Vapor Fuel Requirements Recommendations‹ 1.8.2 Generator and Load Compatibility ‹ 1.12.1 AIR Fuel Ratio Controller Emissions Control SystemCoolant Other Published Standards Standby Generator InstallationBasic Standby Electric System Nfpa StandardsGrounding the Generator Transfer Switch Start Signal Connections‹ 2.6.1 PRE-PACKAGED Type Switch Method‹ 2.7.1 Vented Batteries Battery InstallationPreparation Before START-UP ‹ 2.8.4 Generator SET Lubrication ‹ 2.8.2 Transfer Switch‹ 2.8.1 Prior to Initial START-UP ‹ 2.8.3 Fuel SystemUsing the AUTO/OFF/MANUAL Switch ‹ 3.2.3 Manual Position Sequence of Automatic OperationEngine Heater Checking the Engine OIL Level Weekly Exercise Cycle‹ 4.2.1 Engine OIL Recommendations Changing the Engine AIR Cleaner‹ 4.2.2 OIL and Filter Change Procedure Changing the Engine OIL and FilterSpark Plugs Battery Maintenance‹ 4.5.1 Battery Replacement DC Fuse Miscellaneous MaintenanceCooling System Overload Protection for‹ 4.11.2 Return to Service OUT of Service Procedure‹ 4.11.1 Removal from Service SYSTEM/COMPONENT Procedure Frequency Service ScheduleProblem Cause Correction Troubleshooting GuideElectrical Data TS1 Generator D4992-A Guardian Liquid- Panel 4.3L Drawing No Section Wiring Diagram Control Panel Model No KW Generators No D6975 EC1 ACT Drain Pan Oil QTY Description Base Frame Assembly M6 Hinge Panel Face Panel BTM & Back Control Exploded Views and Parts Lists Cover Plate AVR ALT Leads Sensing Wire QTY To Engine Flywheel Washer Lock M12 Exploded Views and Parts Lists Engine 4.3L GM Exploded Views and Parts Lists MOUNT, Engine R & L KIT Radiator Copper Brass DIA. Clamp Assembly 2 Compartment To Engine Front NUT Wing 1/4-20 Nylk To Stepper Motor Support Solenoid NAT GAS Attach to REGULATOR, N/G R600S Exploded Views and Parts Lists Muffler Catalyst 4.3L Assembly Motor Stepper To Thermostat Housing Guardian Liquid-cooled 40 kW Generators Guardian Liquid-cooled 40 kW Generators PURCHASER’S/OWNER’S Warranty Responsibilities Your Warranty Rights and ObligationsMANUFACTURER’S Emission Control System Warranty Coverage Emission Related Parts Include the Following Emission Control System WarrantyThis Warranty Shall not Apply to the Following Warranty Schedule

0043735, 0043734, 0046262, 0046263, 0046264 specifications

Generac Power Systems has established itself as a leader in the power generation industry, best known for its wide range of products designed for various power needs. Among its offerings are model numbers 0043733, 0046264, 0046263, 0046262, and 0043734. Each unit reflects Generac's commitment to innovation, reliability, and efficiency in providing backup power solutions.

The Generac model 0043733 is a powerful portable generator known for its robust performance and user-friendly design. It typically features a high starting wattage, capable of powering essential appliances during outages. With a compact design and ergonomic handle, it ensures easy transportability, making it an excellent choice for outdoor activities or emergency backup. This model often incorporates advanced technology such as digital watt meters for real-time monitoring and fuel level indicators to enhance user convenience.

Moving on to model 0046264, this unit is engineered for reliability in home standby applications. Its automatic transfer switch allows for seamless switching from grid power to generator power in the event of an outage. This ensures a continuous power supply without any manual intervention. Generac's Quiet-Test technology makes this model exceptionally quiet, operating at a lower decibel level compared to traditional generators, enhancing its suitability for residential areas.

The 0046263 model is similar to the 0046264 but is designed for slightly different power requirements and configurations. It offers a range of customizable options, allowing users to tailor the system to their specific needs. Advanced monitoring capabilities often come standard, enabling users to track performance and receive alerts via smartphone or other devices.

Model 0046262 is also tailored for homeowners, focusing on versatility and efficiency. It usually features a highly efficient engine, capable of providing substantial power while optimizing fuel consumption. Its sturdy build ensures durability, making it suitable for various weather conditions.

Lastly, the 0043734 model is designed for commercial use, capable of handling larger power needs. It typically comes equipped with technologies such as remote monitoring and diagnostics, making it easier to maintain and service. With a heavy-duty construction, this model is built to withstand demanding environments while providing reliable, uninterrupted power.

In summary, Generac Power Systems offers a diverse range of backup power solutions through models such as 0043733, 0046264, 0046263, 0046262, and 0043734. With features focusing on portability, reliability, efficiency, and advanced technology, these models cater to various power requirements, ensuring customers can find the ideal generator for their needs.