Avoid overloading the extension cord.
The extension cord is not intended for simultaneous use by large consumers.
While it may seem convenient to plug multiple devices into one extension cord, it can quickly lead to overloading.
For example, if you connect a kettle + microwave + fan heater to one extension cord, the total load can reach over 3000–4000 W. This means:
-
the extension cord gets hot,
-
the socket may start to melt,
-
the insulation is damaged,
-
there is a risk of fire,
-
the circuit breaker may trip repeatedly.
Why does an extension cord become dangerous?
Extension cords are mostly intended for smaller household appliances (lamps, chargers, TVs, computers).
However, high-power devices generate so much heat and load in a short time that:
-
the copper conductors of the wire heat up,
-
the plastic cover softens,
-
the plug becomes hot,
-
the contact may loosen and cause sparks.
If this happens unnoticed, even one bad connection can cause a fire.
How to use an extension cord safely?
1. Do not connect several large consumers to one extension cord at the same time
High-power appliances (kettles, irons, ovens, heaters) should always go directly into the wall socket .
2. Check the power limit of the extension cord
Most extension cords have a maximum load of 2500–3500 W.
If the total load of the devices exceeds this → there is a risk of overheating.
3. Don't use a coiled extension cord.
The coiled cable does not receive cooling and heats up quickly.
The extension cord must be used fully unrolled .
4. Do not connect extension cords to the circuit
Connecting multiple extension cords in a “daisy chain” increases the current in a single cable and can make the line dangerously hot.
5. Choose a quality extension cord
Prefer options that have:
-
surge protection,
-
thicker cable,
-
clear load marking,
-
warranty from a well-known manufacturer.
6. Check the heating regularly
If the plug or cable socket is warm or hot to the touch, stop using it immediately and investigate the cause.
Summary
High-power appliances should be used directly from the wall outlet , not through an extension cord.
This reduces the risk of overheating, extends the life of the equipment and prevents possible electrical damage.
A properly used extension cord is a safe tool — but only if the load does not exceed its actual capabilities.
