Wire Connections, Before Initial START-UP

INSTALLATION

WIRE CONNECTIONS

Using installer-supplied minimum 300V, 14 AWG copper wire, connect control circuit terminals in the control panel to the Transfer Switch.

Recommended Torque Values

Torque all wire connections/fasteners to values recommended in Figure 10. Suitable for copper wire of 60°/75°C rating.

Figure 10 — Recommended Torque Values

CONNECTIONS:	Torque Value

In Main Distribution Panel:
Refer to panel manufacturer specs

In Control Panel:

240V AC Utility	18 in-lb

Engine Start	5 in-lb

Engine Stop	5 in-lb

Remote Status	5 in-lb

Breaker	20 in-lb

Ground	35 in-lb

Circuit Breakers:
Refer to circuit breaker manufacturer specs

Generator AC Connection System

A single-phase, three-wire AC connection system is used in the Home Generator System.The stator assembly consists of a pair of stationary windings with two leads brought out of each winding.The junction of leads 22 and 33 forms the neutral lead. A complete schematic and wiring diagram can be found on pages 24-25.

NOTE: Neutral is not bonded to ground at generator.

Grounding the Generator

Ground the Home Generator System per applicable codes, standards, and regulations.The generator GND stud is located inside the control panel door, behind control panel.

Generator Control Circuit

Connection

Control circuit interconnections consist of "240V AC Utility" leads.These two leads must be routed in minimum 3/4” conduit. Control lead functions are briefly described as follows:

•Leads deliver utility power to generator’s circuit board, oil warmer, optional battery warmer and charge the battery.

Remote Start Switch with LED

The light on the remote start switch plate is referred to as the LED.The LED will light indicating the generator has started when pushing the start switch. A mounting plate is supplied so that it can be installed at a convenient indoor location.The owner will use it to observe the status of the Home Generator System. Consult with the owner for a convenient location.

To install the remote start switch plate:

•Mount installer-supplied electrical box to wall.

•Using installer-supplied wire, connect the remote start switch and the “Remote Status Light” leads to the control panel terminal strip.

NOTE: LED leads are polarity sensitive.

• Attach mounting plate to electrical box.

BEFORE INITIAL START-UP

Engine Oil

This engine is shipped from the factory filled with the recommended oil. Before starting the engine, check oil level and ensure that engine is serviced as described in the engine operator’s manual.

CAUTION

Any attempt to crank or start the engine before it has been properly serviced with the recommended oil will result in equipment failure.

•Refer to engine manual for oil fill information.

•Damage to equipment resulting from failure to follow this instruction will void warranty.

Oil Considerations

Your Home Generator System is equipped with an engine that has been pre-run at the factory and does not require the traditional “break-in” procedure.

The generator is filled with synthetic oil (API SJ/CF 5W- 30W).This allows for generator operation in the widest range of temperature and climate conditions.

NOTE: The use of synthetic oil DOES NOT alter the required oil change intervals described in the engine operator’s manual.

40221 specifications

The Briggs & Stratton 40221 is a prominent model of portable generator that is well-regarded for its reliability, performance, and innovative features. Designed for both home and professional use, this generator stands out due to its robust construction and versatile applications, making it an excellent choice for homeowners, contractors, and outdoor enthusiasts alike.

One of the main features of the Briggs & Stratton 40221 is its powerful 305cc engine, which delivers a notable output of 3,250 running watts and a peak wattage of 3,750 watts. This capacity ensures that it can effectively power essential appliances during outages or provide energy for tools and equipment on job sites. The generator’s ability to handle a variety of loads makes it suitable for a range of applications, from powering refrigerators and lights to operating power tools.

The Briggs & Stratton 40221 utilizes advanced inverter technology, which is designed to produce clean and stable power. This technology allows users to safely run sensitive electronics such as laptops and smartphones without the risk of damage. The inverter system also provides excellent fuel efficiency, meaning users can run the generator longer on a single tank of gas, enhancing convenience and cost-effectiveness.

Another key characteristic of the 40221 is its lightweight and portable design. Equipped with convenient folding handles and solid rubber wheels, it can be easily transported to job sites, campsites, or stored away during periods of non-use. The generator’s compact frame doesn’t compromise its durability; it is built to withstand outdoor conditions, thanks to its reinforced structure and weather-resistant design.

Safety features are a fundamental aspect of the Briggs & Stratton 40221. It comes with an Automatic Voltage Regulation (AVR) system that helps maintain consistent power output while protecting connected devices from voltage spikes. Additionally, it includes built-in circuit breakers to prevent overload and a low-oil shutdown feature, which stops the engine to avoid damage when oil levels get too low.

The Briggs & Stratton 40221 is equipped with multiple outlets, including 120V AC outlets and a 12V DC outlet for straightforward connectivity to various devices. With user-friendly controls and a clear display for monitoring fuel levels and runtime, this generator is designed for ease of use, appealing to both seasoned and novice users.

In summary, the Briggs & Stratton 40221 combines power, efficiency, portability, and durability into a single unit, making it a practical choice for anyone needing reliable backup power or on-the-go energy solutions. Whether for emergencies or everyday use, it delivers dependable performance that stands the test of time.