What is the significance of connecting one extension cord to another extension cord?

回答於 : 2024-07-12

參考資料

Plugging Two Extension Cords Together is Dangerous! Here's ...

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Extension Cord Safety Tips

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Extension Cord Safety Tips | Energized by Edison

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答案

完善答案

Connecting one extension cord to another extension cord, often referred to as "daisy-chaining," poses several significant risks and is generally deemed unsafe. Here is a detailed explanation of the implications:

### Safety Risks

1. **Overheating and Fire Hazards**:

- Daisy-chaining extension cords can cause them to overheat because the combined length increases electrical resistance[1][5][6]. This overheating can potentially lead to fires, especially if the cords are under heavy loads[10].

2. **Voltage Drop**:

- The longer the extension cord, the more significant the voltage drop, which means that the appliances connected at the end of the chain may not receive sufficient voltage to operate safely and efficiently[1][4].

3. **Increased Resistance**:

- Connecting two extension cords adds to the overall resistance, reducing the current available to the connected devices. This can prevent circuit breakers from tripping in case of a fault, creating a hazardous situation[1][4].

4. **Physical Hazards**:

- Longer cords can become tripping hazards and be more likely to get damaged. Such physical damage to the cords can expose wiring and increase the risk of electrocution or fire[4][9].

5. **Connection Issues**:

- The connections between the extension cords can loosen over time, leading to intermittent power or complete disconnection, which can damage the devices connected to the cords[1].

### Best Practices

- **Use a Single, Appropriately Rated Cord**:

- It is much safer to use a single extension cord of the appropriate length and gauge rather than connecting multiple shorter cords together[3][5][7].

- **Install Additional Outlets**:

- If you frequently find yourself needing more outlets or longer cords, consider having a qualified electrician install additional outlets. This is a far safer and more reliable solution[4][8].

- **Regular Inspection**:

- Ensure that any extension cords used are in good condition and rated appropriately for the intended load. Avoid using damaged cords to prevent risks of shock or fire[12][15].

### Conclusion

Connecting one extension cord to another should be avoided due to the significant safety risks involved. Instead, opt for a single, adequately rated cord or install additional outlets to ensure safe and efficient electrical usage.

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