Plugging a dehumidifier into a sump pump outlet is a common consideration for homeowners dealing with basement moisture issues. This practice involves connecting a dehumidifier to the same electrical outlet used by a sump pump. While it may seem convenient, it’s crucial to understand the electrical requirements, safety considerations, and potential risks involved. This article explores the feasibility of this setup, addressing power compatibility, circuit load concerns, and best practices for safe implementation.
What Are the Power Requirements of a Typical Dehumidifier?
Understanding the power needs of a dehumidifier is crucial when considering plugging it into a sump pump outlet. Here are the key specifications:
- Voltage: Most residential dehumidifiers operate on 115V or 120V.
- Frequency: Standard household frequency of 60Hz is typical.
- Amperage: Commonly ranges from 6 to 7 amps.
- Wattage: Can vary, but often falls between 700-800 watts.
For example:
– A 70-pint Frigidaire dehumidifier requires 115V, 6.7 amps, and 745 watts.
– An Aprilaire E100 dehumidifier needs 120V and draws 6.9 amps.
Is the Sump Pump Outlet Compatible with a Dehumidifier?
To determine compatibility, consider these factors:
- Outlet Rating: Most household outlets are on 15-amp or 20-amp circuits.
- Plug Type: Dehumidifiers typically use a 5-15P plug, compatible with standard outlets.
- Circuit Capacity: Ensure the circuit can handle the combined load of the sump pump and dehumidifier.
A 15-amp circuit provides 1800 watts (15 amps * 120 volts), which theoretically could support both appliances. However, it’s crucial to account for the sump pump’s power requirements and any other devices on the same circuit.
What Are the Potential Risks of This Setup?
Connecting a dehumidifier to a sump pump outlet isn’t without risks:
- Circuit Overload: Adding a dehumidifier to an already loaded circuit can lead to tripped breakers or fire hazards.
- Startup Current Issues: Dehumidifiers have higher startup currents, which could momentarily overload the circuit.
- Interference with Sump Pump Operation: In a power outage or circuit trip, both the sump pump and dehumidifier would lose power simultaneously.
How Can I Safely Connect a Dehumidifier to a Sump Pump Outlet?
To ensure safe operation, follow these steps:
- Calculate Total Load: Add up the amperage of all devices on the circuit, including the sump pump and dehumidifier.
- Check Circuit Capacity: Ensure the total load doesn’t exceed 80% of the circuit’s rating (12 amps for a 15-amp circuit).
- Consult an Electrician: Have a professional assess your electrical setup and perform a load calculation.
- Consider a Dedicated Circuit: If possible, install a separate circuit for the dehumidifier.
What Alternatives Exist for Powering a Dehumidifier in the Basement?
If plugging into the sump pump outlet isn’t feasible, consider these alternatives:
- Dedicated Circuit: Install a new circuit specifically for the dehumidifier.
- Extension Cord: Use a heavy-duty, properly rated extension cord to reach another outlet (temporary solution only).
- Relocate the Dehumidifier: Place it near a different outlet if possible.
- Upgrade Electrical Panel: If your home’s electrical system is at capacity, consider an upgrade to accommodate additional appliances.
How Do I Measure the Electrical Load on My Circuit?
To accurately measure the electrical load:
- Use a Clamp Meter: This tool measures current without disconnecting wires.
- Calculate Wattage: Multiply the measured amperage by the voltage (usually 120V).
- Add Up Devices: Sum the wattage of all devices on the circuit.
| Device | Typical Wattage |
|---|---|
| Sump Pump | 800-1000W |
| Dehumidifier | 700-800W |
| Other Appliances | Varies |
Ensure the total doesn’t exceed 1440W for a 15-amp circuit or 1920W for a 20-amp circuit (80% of max capacity).
What Should I Do If My Circuit Can’t Handle Both Devices?
If your circuit is unable to safely power both the sump pump and dehumidifier:
- Prioritize the Sump Pump: Always ensure the sump pump has a dedicated, reliable power source.
- Install a New Circuit: Have an electrician add a circuit for the dehumidifier.
- Use a Different Outlet: Find an outlet on another circuit for the dehumidifier.
- Upgrade to a Lower-Power Dehumidifier: Consider a more energy-efficient model with lower power requirements.
Conclusion
While it’s technically possible to plug a dehumidifier into a sump pump outlet, it’s not always advisable due to potential safety risks and electrical load concerns. Always prioritize safety and consult with a licensed electrician before making any changes to your home’s electrical setup. Proper assessment and installation can ensure both your sump pump and dehumidifier operate efficiently and safely, maintaining a dry and healthy basement environment.
References:
1. Frigidaire Dehumidifier Specifications
2. Aprilaire E100 Dehumidifier Specification Sheet
3. HVAC-Talk: Dehumidifier Electrical Wiring
4. Energy Star: Dehumidifier Basics
5. National Electrical Code (NEC) Guidelines