Southwire 40350-RVC Surge Guard Automatic Transfer Switch User Manual

1. Introduction

The Southwire 40350-RVC Surge Guard Automatic Transfer Switch provides comprehensive electrical protection and seamless power management for your RV. This device automatically transfers power between available shore power and generator inputs, ensuring a continuous and safe power supply to your RV's load center. It integrates advanced surge suppression and protection against various electrical anomalies, conforming to UL 1008 requirements.

2. Important Safety Information

WARNING: This product may contain materials cautioned by California Proposition 65.

• DO NOT REMOVE COVER WITH VOLTAGE PRESENT. Ensure all power inputs are disconnected and verified dead with a multi-meter before attempting any installation or maintenance.
• DO NOT MOUNT WITH COVER FACE DOWN (PARALLEL TO EARTH).
• Installation should be performed by a qualified professional if you are unfamiliar with electrical wiring procedures or the use of a multi-meter.
• Use 75°C copper wire only for field wiring.
• Use 300V, No.6 AWG supply conductors.
• Suitable strain relief for conductors shall be provided at installation.

3. Installation and Setup

Proper installation is crucial for the safe and effective operation of your Surge Guard Automatic Transfer Switch. Refer to the detailed wiring diagrams provided in the full product manual for specific connections.

3.1 Mounting

Mount the unit in a secure, dry location, ensuring adequate ventilation. Avoid mounting the unit with the cover facing downwards. Ensure easy access for wiring and future maintenance.

3.2 Wiring Requirements

• All field wiring must use 75°C copper conductors.
• Supply conductors should be 300V, No.6 AWG.
• Ensure proper strain relief is provided for all conductors at the point of installation to prevent damage to wiring connections.

3.3 Electrical Connections

The transfer switch manages connections from shore power and a generator to the RV's load center. Connect the shore power input, generator input, and RV load output according to the wiring diagram. Ensure all connections are tight and secure.

Figure 1: Front view of a Surge Guard Automatic Transfer Switch, model 40250-RVC. This image represents a previous generation or similar model to the 40350-RVC. The unit is a black rectangular box with the "Surge Guard" logo and model number "40250-RVC" printed on the front, along with caution statements regarding cover removal and mounting orientation. It indicates RV power protection with RV-C CAN communication.

4. Operation

The 40350-RVC Automatic Transfer Switch is designed for automatic, hands-free operation.

4.1 Power Transfer Logic

• When both shore power and generator power are available, the generator input will dominate after a 30-second delay. This delay allows the generator to stabilize before connecting to the RV's electrical system.
• If generator power is removed, the unit will automatically switch to shore power if available.

4.2 Electrical Protection Features

The unit provides multi-mode surge suppression (fuse protected) and protects against a range of electrical issues, including:

• Low/Excessive Voltage (below 95V / above 132V)
• Miswired Pedestal
• Open Neutral
• Open Ground
• High/Low Frequency
• Reverse Polarity

4.3 Monitoring

The 40350-RVC is RV-C compatible, allowing integration into an RV-C system for advanced monitoring. Alternatively, Southwire's remote display (sold separately) can be used to monitor power supply, power consumption, and error conditions.

5. Maintenance

The Southwire 40350-RVC is designed for minimal maintenance. Periodically inspect all wiring connections for tightness and signs of wear or corrosion. Ensure the unit's ventilation is not obstructed. For any internal issues, contact a qualified technician.

6. Troubleshooting

If you experience issues with your automatic transfer switch, consider the following:

• No Power to RV: Check both shore power and generator power sources. Verify circuit breakers are not tripped.
• Incorrect Power Source: Ensure the generator has stabilized if it is the desired power source. The unit has a 30-second delay for generator dominance.
• Error Codes: If using an RV-C system or remote display, consult the display for specific error codes related to voltage, frequency, or wiring issues. Refer to the remote display manual for code interpretations.
• Surge Protection Tripped: If a major surge event occurs, the internal surge suppression may be affected. Inspect the unit for any visible damage.
• Persistent Issues: If troubleshooting steps do not resolve the problem, contact Southwire customer support or a certified electrician.

7. Specifications

8. Warranty and Support

For warranty information, technical support, or service inquiries, please contact Southwire customer service. Keep your purchase receipt for warranty claims.

Manufacturer: SOUTHWIRE SURGE GUARD

For further assistance, visit the official Southwire website or contact their support channels.