Extension Cord For Induction Cooker: Complete Analysis of Standards, Types, and Industry Performance

Types of Extension Cords for Induction Cookers

An extension cord for an induction cooker is a specialized power cord designed to safely deliver high electrical loads required by induction stovetops. Unlike standard household extension cords, induction cookers demand cords capable of handling sustained high wattage (typically 1,500 to 3,500 watts), making proper selection crucial for safety, efficiency, and appliance longevity. Using an inadequate cord can lead to overheating, voltage drops, fire hazards, or damage to the cooker. Below is a detailed breakdown of common extension cord types, with a focus on suitability for induction cooking applications.

Standard Extension Cords

Constructed with three-conductor copper wiring (often oxygen-free copper for improved conductivity), these cords are designed for general household use. The insulation is typically PVC (polyvinyl chloride), which offers good flexibility, water resistance, and durability under normal conditions.

Advantages

• Affordable and widely available
• Flexible and easy to handle
• Suitable for low-power appliances
• PVC jacket resists moisture and abrasion

Limitations

• Often too thin (16–18 AWG) for induction cookers
• Can overheat under sustained high load
• Limited heat resistance
• Not recommended for continuous high-power use

Best for: Small appliances, lamps, or low-wattage devices — not recommended for full-power induction cooking.

Heavy-Duty Extension Cords

Engineered for high-power applications, heavy-duty cords typically feature thicker copper or copper-clad aluminum wires (12–14 AWG) and robust insulation made from PVC or thermoplastic elastomer (TPE). These materials provide superior heat resistance and mechanical strength, making them more suitable for appliances like space heaters, power tools, and potentially induction cookers when properly rated.

Advantages

• Higher current capacity (15–20 amps)
• Reduced voltage drop over distance
• Resistant to heat, abrasion, and physical stress
• Often feature grounded 3-prong plugs

Limitations

• Bulkier and less flexible than standard cords
• Higher cost
• Still requires correct AWG and length selection
• Copper-clad aluminum has higher resistance than pure copper

Best for: Induction cookers if rated for at least 15 amps and 12 AWG, short lengths (under 25 ft), and used on a dedicated circuit.

Outdoor Extension Cords

Designed for harsh environments, outdoor cords use thick insulation (PVC or neoprene) to resist UV radiation, moisture, temperature extremes, and physical damage. They are often brightly colored (orange or yellow) for visibility and safety. While durable, their suitability for induction cookers depends on gauge and rating.

Advantages

• Excellent weather and UV resistance
• Durable jacket withstands rough handling
• Safe for damp or outdoor conditions
• Available in heavy-duty gauges (12–14 AWG)

Limitations

• Stiffer and harder to coil
• Can be overkill for indoor kitchen use
• Not all outdoor cords are rated for continuous high load

Best for: Outdoor kitchens or temporary setups where weather resistance is needed — ensure 12 AWG and UL certification for induction use.

Surge Protector Extension Cords

These cords include built-in surge suppression circuitry to protect sensitive electronics from voltage spikes. While convenient for TVs and computers, they often have higher internal resistance and may not handle the sustained current draw of an induction cooker, especially on lower-gauge models.

Advantages

• Protects against power surges and spikes
• Multiple outlets for added convenience
• Indicator lights show protection status

Limitations

• Not designed for continuous high current
• Joule ratings may be insufficient for large surges
• Can overheat when used with induction cookers
• Often use thinner internal wiring (16 AWG)

Best for: Electronics — avoid using with induction cookers unless explicitly rated for high-wattage appliances.

Reel/Air Line Extension Cords

These multi-functional cords are primarily designed for workshops, combining electrical wiring with pneumatic air lines for tools. While they may feature reinforced copper conductors and durable rubber or neoprene jackets, they are not intended for kitchen appliances. The retractable mechanism can introduce resistance and heat buildup, making them unsuitable for induction cookers.

Advantages

• Convenient storage with retractable design
• Durable construction for industrial use
• Combines power and air supply

Limitations

• High risk of overheating when fully retracted
• Not rated for continuous high-load kitchen appliances
• Complex design increases failure points
• Potential voltage drop due to coiled wire

Best for: Workshop tools — not recommended for induction cookers due to safety and performance risks.

Type	Wire Gauge (AWG)	Max Load (Typical)	Heat Resistance	Suitability for Induction Cookers
Standard Extension Cords	16–18	10–13 A / 1,200–1,560 W	Low	Poor – Risk of overheating
Heavy-Duty Extension Cords	12–14	15–20 A / 1,800–2,400 W	High	Good – If 12 AWG and short length
Outdoor Extension Cords	12–14	15–20 A / 1,800–2,400 W	Very High	Good – With proper rating and use
Surge Protector Cords	16–14	10–15 A / 1,200–1,800 W	Medium	Fair to Poor – Not designed for continuous load
Reel/Air Line Cords	14–16	13–15 A / 1,560–1,800 W	Medium (when coiled)	Poor – Overheating risk when retracted

Safety Tip: For induction cookers, always use a 12 AWG, 3-prong, grounded extension cord no longer than 25 feet, rated for at least 15 amps and 1,800 watts. Avoid coiled or retractable cords. Check for UL or ETL certification to ensure safety compliance. When possible, plug the cooker directly into a wall outlet on a dedicated circuit.

Expert Note: Induction cookers are highly sensitive to voltage drops. A low-quality or undersized extension cord can cause the appliance to shut down, reduce cooking efficiency, or even void the warranty. Always consult your cooker’s manual for power requirements before selecting an extension cord.

What Makes a Product Durable: Key Factors in Extension Cord Longevity

The durability of an extension cord—especially one used for high-power appliances like induction cookers—depends heavily on the quality of materials, engineering design, and construction standards. A poorly built cord can overheat, degrade quickly, or pose serious safety hazards. In contrast, a well-constructed extension cord ensures reliable performance, safety, and long-term value. Below are the critical factors that define a durable extension cord.

1. High-Quality Materials for Cord Construction

The outer jacket of an extension cord plays a vital role in protecting internal wiring from physical damage, moisture, and environmental stress. Premium materials such as PVC (Polyvinyl Chloride) and Thermoplastic Elastomer (TPE) offer excellent flexibility, impact resistance, and longevity—even in cold environments where standard cords become brittle.

For outdoor or industrial use, neoprene rubber is often preferred due to its superior resistance to UV radiation, ozone, oil, and extreme temperature fluctuations. Neoprene-jacketed cords maintain integrity when exposed to sunlight, rain, or snow, making them ideal for patios, garages, or job sites.

2. Appropriate Wire Gauge for Power Load

Wire gauge—measured using the American Wire Gauge (AWG) system—is a crucial determinant of an extension cord’s electrical capacity. A lower gauge number indicates a thicker wire, which can safely carry higher current loads with less resistance and heat buildup.

Induction cooktops typically draw between 12 to 16 amps and require a stable, high-current supply. For safe operation:

• 12-gauge wire: Best for long runs (over 50 feet) or heavy-duty induction stoves. Offers minimal voltage drop and maximum heat resistance.
• 14-gauge wire: Suitable for shorter distances (under 50 feet) and moderate power needs. Still safe but less ideal for continuous high-load use.
• 16-gauge or higher: Not recommended for induction cooking—increased risk of overheating and fire.

Strain Relief Design

One of the most common failure points in extension cords is at the plug ends, where repeated bending and pulling can cause internal wires to break. High-quality cords incorporate robust strain relief features—such as molded rubber boots or reinforced plastic housings—that absorb stress and protect the wire connections.

This design prevents fraying and disconnection, significantly extending the cord’s lifespan, especially in dynamic environments where cords are frequently unplugged or moved.

Weatherproof and Locking Connectors

For outdoor or semi-outdoor use, look for extension cords with weather-resistant ratings (e.g., UL listed for outdoor use). These include sealed plug housings, rubber gaskets, and recessed contacts to prevent water ingress.

Additionally, locking plugs (such as twist-lock connectors) ensure a secure connection that won’t accidentally disconnect under load—critical for high-draw appliances like induction stoves that rely on consistent power delivery.

UV and Color Fade Resistance

Exposure to sunlight degrades many plastics and dyes over time. Durable extension cords use UV-stabilized materials and high-quality pigments that resist fading and cracking. This not only maintains the cord’s appearance but also preserves its structural integrity.

Thicker jacketing further enhances protection against abrasion, ozone exposure, and chemical contaminants—common in outdoor or industrial settings.

Heat Dissipation and Insulation

Durability isn’t just about physical toughness—it also involves thermal performance. Cords used with induction cookers must dissipate heat effectively to prevent insulation breakdown.

High-quality internal insulation (such as cross-linked polyethylene) resists melting and maintains dielectric strength under sustained loads. Combined with proper wire gauge, this ensures the cord remains cool and safe during extended use.

Feature	Why It Matters	Recommended for Induction Cookers
Wire Gauge (AWG)	Thicker wires reduce resistance and overheating	12-gauge (ideal), 14-gauge (acceptable for short runs)
Jacket Material	Determines flexibility, weather resistance, and lifespan	Neoprene (outdoor), TPE/PVC (indoor)
Strain Relief	Prevents wire breakage at plug connections	Molded rubber or reinforced plastic
Connector Type	Ensures secure, stable connection	Locking or weatherproof plugs for outdoor use
UV Resistance	Protects against sun damage and material degradation	Essential for outdoor or sun-exposed locations

Important Safety Note: Using an undersized or poorly constructed extension cord with an induction cooker can lead to overheating, melted insulation, electrical fires, or damage to the appliance. Always verify that your extension cord meets the power requirements of your induction stove and is rated for continuous duty. When in doubt, consult the manufacturer’s specifications or use a dedicated outlet.

How to Choose the Right Extension Cord for an Induction Cooker

Selecting the correct extension cord for an induction cooker is crucial for safety, performance, and longevity. Induction cooktops are high-wattage appliances that demand stable, reliable power delivery. Using an improper extension cord can lead to overheating, voltage drop, fire hazards, or damage to the appliance. Below are the key factors to consider when choosing a suitable extension cord for your induction cooker.

Length and Wire Gauge (Critical for Power Delivery)

The distance between your induction cooker and the wall outlet determines the required cord length. However, longer cords increase electrical resistance, especially if they use thin (high-gauge) wires. This resistance leads to voltage drop and heat buildup—dangerous with high-power appliances like induction stoves.

• Optimal Gauge: Use a 12 or 14 AWG (American Wire Gauge) cord. Lower gauge numbers indicate thicker wires capable of handling higher current (typically 15–20 amps).
• Recommended Length: Keep the cord as short as possible—ideally under 6 feet (1.8 meters). If a longer cord is necessary, never exceed 10 feet (3 meters) with a 12-gauge wire.
• Avoid Thin Cords: Steer clear of 16 or 18-gauge extension cords, which are designed for lamps or phone chargers, not heavy-duty kitchen appliances.

Key Insight: A short, thick-gauge cord ensures minimal energy loss and maximum safety.

Number of Outlets (Avoid Multi-Plug Use)

While multi-outlet extension cords offer convenience, they are not safe for induction cookers. These appliances typically draw 1,500 to 2,500 watts, requiring dedicated power circuits.

• Single Outlet Only: Use a cord with a single grounded outlet to prevent overloading.
• No Daisy-Chaining: Never plug another appliance into the same extension cord or outlet as the induction cooker.
• Dedicated Circuit: For best results, plug the induction stove directly into a wall outlet on a 15–20 amp circuit without any extension.

Safety Rule: Treat your induction cooker like a space heater or microwave—never share circuits or use power strips.

Indoor vs. Outdoor Use (Environment Matters)

The environment where the cord will be used affects its construction and durability requirements.

• Indoor Cords: Typically have thinner, more flexible jackets (often vinyl). Suitable only for dry, indoor environments.
• Outdoor Cords: Made with thicker, UV-resistant rubber or thermoplastic (marked “W-A” or “Outdoor Rated”). Resistant to moisture, sunlight, and temperature extremes.
• Never Use Outdoors Indoors: While outdoor-rated cords can be used indoors, indoor-only cords should never be used outside due to safety risks.

Best Practice: Even indoors, consider a weather-resistant cord if near sinks or in humid kitchens.

Safety Features (Look for Built-In Protections)

Modern extension cords may include advanced safety mechanisms that enhance protection for high-draw appliances.

• Surge Protection: Helps guard against voltage spikes that could damage sensitive electronics in induction cookers.
• Overload Protection: Some cords have thermal cut-off switches that automatically shut off power if overheating occurs.
• Indicator Lights: LED indicators show when the cord is energized, helping users confirm power status and detect issues.
• Polarized Plugs & Grounding: Ensure the cord has a 3-prong grounded plug to prevent electric shock and improve stability.

Pro Tip: Avoid basic, unmarked cords without safety certifications or overload protection.

Certification and Compliance (Non-Negotiable for Safety)

Always choose extension cords that meet recognized safety standards. This ensures the product has been tested for electrical performance, heat resistance, and durability.

• UL (Underwriters Laboratories): One of the most trusted safety certification marks in North America.
• ETL (Intertek): Equivalent to UL, indicating compliance with safety standards.
• CSA (Canada): Required for use in Canadian households.
• Check Labels: Look for labels stating “120V, 15A” or higher, and ensure the cord is rated for at least 1875 watts (for most induction stoves).

Warning: Unlabeled or counterfeit cords pose serious fire and electrocution risks.

Material Quality and Construction

Beyond certifications, the physical build of the cord matters for long-term reliability and safety.

• Jacket Material: Look for oil-resistant, abrasion-resistant insulation that won’t crack over time.
• Connector Durability: Molded plugs and strain reliefs prevent wire separation and short circuits.
• Copper Conductors: Ensure the cord uses pure copper wiring (not aluminum or copper-clad steel), which offers superior conductivity.
• Flat vs. Round Cords: Round cords are generally more durable and better for heavy-duty use.

Expert Note: High-quality cords may cost more but significantly reduce fire risk and appliance damage.

Professional Recommendation: Whenever possible, avoid using an extension cord altogether. Plug your induction cooker directly into a properly grounded wall outlet on a dedicated circuit. If an extension is absolutely necessary, use a heavy-duty, 12-gauge, UL/ETL-certified cord no longer than 6 feet with a single outlet and built-in surge/overload protection. Regularly inspect the cord for signs of wear, heat discoloration, or fraying.

Feature	Recommended Specification	Purpose/Importance
Wire Gauge	12 or 14 AWG	Handles high current (15–20A) with minimal resistance and heat buildup
Length	3–6 feet (1–1.8 m)	Minimizes voltage drop and energy loss
Outlet Type	Single, grounded (3-prong)	Prevents overloading and ensures safe grounding
Certification	UL, ETL, or CSA listed	Guarantees safety testing and compliance with electrical standards
Power Rating	At least 1875W (15A/120V)	Suitable for most induction cookers (check your model’s specs)
Environment	Indoor-rated or outdoor-rated (if applicable)	Ensures durability and safety in intended conditions

Additional Tips for Safe Induction Cooker Use

• Check Appliance Label: Always refer to your induction cooker’s manual or rating plate for voltage, amperage, and power requirements.
• Avoid Coiling: Never use the cord while coiled, as this traps heat and increases fire risk.
• Don’t Run Under Rugs: Placing cords under carpets or furniture blocks ventilation and increases overheating danger.
• Inspect Regularly: Replace any cord showing cracks, exposed wires, or melted insulation immediately.
• Use a Dedicated Outlet: Do not share the outlet with other high-power devices like microwaves or kettles.

What to Pair (and Avoid) with an Extension Cord for Induction Cookers

Using an extension cord with an induction cooker requires careful consideration to ensure safety, efficiency, and compliance with electrical standards. Induction cookers are high-power appliances that typically draw between 1,200 and 2,500 watts, demanding a stable and robust power supply. This guide outlines what should and should not be connected to an extension cord when using an induction cooker, helping you avoid fire hazards, circuit overloads, and equipment damage.

Safety Warning: Never use a lightweight or undersized extension cord with an induction cooker. Always use a heavy-duty, grounded (3-prong), 12- or 14-gauge cord rated for at least 15 amps and 125 volts. Ensure the cord is in excellent condition, free from fraying, kinks, or exposed wires.

Devices to Avoid Plugging into the Same Extension Cord

While an extension cord may have multiple outlets, it is not designed to handle multiple high-draw appliances simultaneously—especially when one is an induction cooker. Below are key categories of devices that should never be paired with an induction cooker on the same cord.

• High-Power Appliances

  Appliances such as microwaves, electric ovens, toaster ovens, electric kettles, and space heaters consume significant power (often 1,000–1,800 watts or more). When used alongside an induction cooker on the same extension cord, the combined load can exceed the cord’s capacity, leading to overheating, melting insulation, and potential fire hazards.

  Recommendation: Plug high-power appliances directly into dedicated wall outlets on separate circuits whenever possible.

• Multiple Appliances Simultaneously

  Even if individual devices seem safe on their own, connecting multiple appliances—such as a blender, coffee maker, or rice cooker—alongside an induction cooker can overload the extension cord. Most standard extension cords are not designed for continuous high-current draw from multiple sources.

  Example: An induction cooker (1,800W) + microwave (1,200W) = 3,000W total, which exceeds the safe limit of most 15-amp circuits (1,875W max).

  Recommendation: Use a single-appliance extension cord strictly for the induction cooker. Avoid power strips or multi-outlet adapters in this scenario.

• Outdoor Equipment in Poor Weather

  Using indoor-rated extension cords with outdoor appliances like electric grills, leaf blowers, or string trimmers—especially during rain, snow, or freezing temperatures—poses serious risks. Moisture can penetrate the cord, causing short circuits, shocks, or equipment failure.

  Note: Outdoor-rated cords (marked "W-A" or "W") have weather-resistant jackets and are UV-protected, but even these should not be used with induction cookers unless absolutely necessary and under dry conditions.

  Recommendation: Never use an extension cord for an induction cooker outdoors unless it's a temporary, dry, and well-ventilated setup with a properly rated cord.

• Surge-Producing Devices

  Motors in vacuum cleaners, air compressors, refrigerators, or power tools generate electrical surges during startup. These voltage spikes can interfere with the sensitive electronics in induction cookers, potentially damaging internal circuitry or disrupting operation.

  Technical Insight: Induction cookers rely on precise electromagnetic control. Voltage fluctuations from surge-producing devices can trigger error codes or reduce efficiency.

  Recommendation: Use a dedicated line for the induction cooker. If surges are a concern, consider a line conditioner or uninterruptible power supply (UPS) with surge protection—though ensure it's rated for high-wattage appliances.

• Low-Power Devices (Inefficient Use)

  While low-power devices like phone chargers, laptops, LED lamps, or small kitchen gadgets (e.g., electric can openers) are not dangerous to plug into the same extension cord, doing so is inefficient and unnecessary. These devices draw minimal power (5–50W), but cluttering the cord increases the risk of accidental disconnection or tripping.

  Best Practice: Use a separate power strip or USB charging station for low-power electronics. Reserve the extension cord exclusively for the induction cooker to maintain optimal performance and safety.

Device Type	Power Draw (Typical)	Risk Level	Recommended Action
Microwave / Electric Oven	1,000 – 1,800W	🔴 High	Never share extension cord; use dedicated outlet
Space Heater	1,500W	🔴 High	Use separate circuit; avoid extension cords entirely
Vacuum Cleaner / Power Tools	600 – 1,200W (with surges)	🟠 Medium-High	Avoid shared circuits; use surge protection if needed
Phone Charger / Laptop	5 – 100W	🟢 Low (but inefficient)	Use separate charging station
Electric Grill (Outdoor)	1,200 – 1,800W	🔴 High (in wet conditions)	Use only dry, outdoor-rated cords; never with induction cooker

Expert Tip: If you must use an extension cord with your induction cooker, choose a 12-gauge, 3-prong, grounded cord no longer than 6 feet (2 meters). Longer cords increase resistance and voltage drop, reducing efficiency and increasing heat buildup. Always inspect the cord before each use for signs of wear or damage.

Best Practices for Safe Induction Cooker Use

• Use a dedicated outlet: Ideally, plug the induction cooker directly into a wall outlet on a 15- or 20-amp circuit.
• Avoid daisy-chaining: Never plug one extension cord into another, as this increases resistance and fire risk.
• Check cord ratings: Look for labels like “14 AWG,” “15A,” “125V,” and “Heavy Duty” to ensure compatibility.
• Monitor temperature: If the cord or plug feels warm during use, disconnect immediately—it’s a sign of overload.
• Unplug when not in use: Reduce phantom load and protect against accidental activation.
• Consider a permanent solution: If you frequently use an induction cooker in a location without nearby outlets, consult an electrician about installing a new outlet.

Remember, the induction cooker is one of the most power-intensive kitchen appliances. While extension cords can offer temporary flexibility, they should be used with extreme caution. Prioritizing direct wall outlet connections and avoiding shared loads ensures long-term safety, appliance longevity, and peace of mind in your kitchen.

Induction Cooker & Extension Cord Safety Guide

Using an induction cooker safely requires careful attention to electrical setup, especially when using extension cords. Below are detailed answers to common questions about compatibility, safety, and best practices for powering your induction cooktop.

Q1: Can I use an outdoor extension cord for an induction cooker?

Yes, you can safely use an outdoor-rated extension cord for an induction cooker, even indoors. These cords are specifically engineered to withstand environmental stressors such as moisture, ultraviolet (UV) radiation, and temperature fluctuations, making them more durable than standard indoor cords.

• Weather Resistance: Outdoor cords feature thicker insulation that resists cracking, water damage, and degradation from humidity—ideal for kitchens where spills and steam are common.
• Enhanced Durability: Reinforced jackets protect against abrasion and physical wear, increasing longevity.
• Indoor Use Approved: While outdoor cords can be used safely inside, the reverse is not true—indoor cords should never be used outdoors due to safety risks.

Always ensure the cord is rated for the power requirements of your induction cooker (typically 15–20 amps and 120V in North America).

Q2: Can multiple appliances be plugged into an extension cord along with an induction cooker?

No, it is strongly discouraged and potentially dangerous to plug additional appliances into the same extension cord used for an induction cooker.

• High Power Demand: Induction cookers typically draw 1,500 to 1,800 watts (or more), placing significant load on the circuit.
• Overheating Risk: Sharing the cord with other devices (e.g., microwaves, blenders, kettles) can exceed the cord’s current capacity, leading to overheating, melting insulation, or electrical fires.
• Circuit Overload: Most household circuits are rated for 15–20 amps; exceeding this can trip breakers or damage wiring over time.

Safety Recommendation: Use a dedicated extension cord for the induction cooker only. Plug no other devices into the same cord or outlet strip.

Q3: What voltage should an extension cord support for an induction cooker?

The extension cord must match the voltage requirements of both your induction cooker and local electrical standards:

• In North America: Most induction cookers operate on 120 volts and require a cord rated for at least 15 amps (standard household outlets).
• In Europe, Australia, and other regions: Many models require 220–240 volts and higher amperage, often needing a dedicated circuit and specialized plug types (e.g., Type F, G, or I).
• Matching Ratings: Always verify that the extension cord’s voltage and amperage rating meet or exceed those of the induction cooker (check the device label or manual).

Using an incompatible cord can result in poor performance, equipment damage, electric shock, or fire hazards. When in doubt, consult a licensed electrician.

Q4: Should extension cords for induction cookers be replaced regularly?

Extension cords do not need routine replacement based on time alone, but they should be inspected frequently and replaced immediately if signs of wear or damage appear.

• Replace if:
  • The insulation is cracked, frayed, or peeling.
  • There are visible burns, discoloration, or melted areas on the plug or cord.
  • The cord feels warm during use—this indicates overload or internal damage.
  • There are exposed wires or loose connections.
  • The plug no longer fits snugly into the outlet.
• Lifespan Factors: Continuous use, frequent bending, exposure to heat, moisture, or UV light can shorten a cord’s life. Outdoor cords may degrade faster if left outside year-round.

For critical high-power appliances like induction cookers, err on the side of caution—replace suspect cords promptly to avoid safety risks.

Q5: Should I choose an indoor or outdoor extension cord for my induction cooker?

For most induction cooker applications—especially in kitchens—an outdoor-rated extension cord is the safer and more durable choice.

Feature	Indoor Extension Cord	Outdoor Extension Cord
Insulation Thickness	Thin, flexible jacket	Thick, rugged jacket
Moisture Resistance	Limited; not waterproof	Water-resistant or waterproof
UV Resistance	Poor; degrades in sunlight	Excellent; designed for sun exposure
Durability	Lower; prone to wear	Higher; resists abrasion and impact
Suitable for Kitchen Use?	Riskier due to steam and spills	Recommended for safety and longevity
Can Be Used Outdoors?	No – fire and shock hazard	Yes – designed for outdoor conditions

While indoor cords are cheaper and easier to handle, they lack the resilience needed in high-moisture environments. Outdoor cords, though slightly stiffer, offer superior protection and peace of mind. You can safely use an outdoor cord indoors, but never use an indoor cord outside or in wet-prone areas.