There is a reason for USB-C extensions not to be part of the standard. They can be bothersome in the best case and dangerous in the worst.
There is a reason for USB-C extensions not to be part of the standard. They can be bothersome in the best case and dangerous in the worst.
Some extension cords absolutely do have circuit breakers, I know this because we use them at work for some of our heavy duty equipment. I also know for a fact that fused link extension cords were their predecessor and you can buy both on Amazon still so I know they exist.
Further I was not saying don’t use an extension cord with a welder. I was saying the correct gauged wire for that extension cord may be necessary to carry the load.
The point of bringing up 110 vs 120 volts was to point out that more voltage = more push. More push through a smaller circuit than is recommended means more heat.
Amperage is the draw, and it’s important because most devices are rated by draw rather than voltage, so what I said does make sense in that context. I wasn’t trying to say they were the same thing. The reason they’re rated in amperage is because the amperage is what kills you, and because thats what the safety devices are rated in. That’s how much of a draw they can withdtande before they break the circuit.
I was also pretty exhausted when I responded so my explanation barely makes sense even to me, but I do see where I was going with that. Have you ever seen one of those old brown extension cords with three outlets? They’re usually 2 prong (don’t have a third prong for ground). They also don’t have any of the fail-safes that new extension cords do have.
While I was not specifically talking about daisy-chaining power strips, I wanted to make it clear that even using multiple extension cords in a daisy-chain manner adds significant resistance to the circuit and with enough push and a big enough amperage appliance it absolutely is a fire hazard.
I’m not sure where you got that I said you shouldn’t use an extension cord with a welder. I was saying you don’t need an extension cord worthy of powering a welder safely in order to power a lamp. But a smaller lower rated extension cord that works for a small indoor appliance is not up to the task and would be dangerous to use with a welder without the proper protections.
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All devices are rated in both voltage and amperage. The reason the voltage is not typically listed is because the market defines the voltage available and the plug on the device is what tells you the device’s voltage rating, if nowhere else. It’s still important to tell you if it requires an adapter, ignoring the part where the average consumer isn’t going to try to wire a NEMA 5-15 (regular north American plug) to a 12v barrel plug.
This next part is not me trying to be a know-it-all, but to dispel an incredibly dangerous misconception. Amperage is not necessarily what kills you. That is a myth, and a dangerous one at that. Amperage is what causes burns, including internal burns, and is what kills you later at the hospital. Higher voltage is what kills you NOW by finding more paths. If it crosses your heart or brain, it’s probably over. Electricity does not seek the path of least resistance, but rather it travels across each path inversely proportional to the resistance. If you complete a circuit with opposite hands, you’ll probably be safe because your chest cavity of blood vessels will conduct the majority of electricity in paths other than through your heart or brain. AC power and higher voltages increase this risk. Low voltage is not entirely safer, but for most consumer use, “low voltage” is mostly below the breakdown voltage of dry skin, about 30-40v. Wet, and especially sweaty skin will conduct far lower voltages - licking 9v batteries is a normal example, but I’ve also been shocked by a 12v car battery the first time I worked around a side-terminal battery. Opposite forearms, too, so you can bet I took a minute to monitor my pulse. But the Lethal voltages and amperages are in the milli-unit range if they find the correct path. That’s not a high threshold, even with the significantly lower resistance pathways across your chest taking the majority of electricity. And, even if it was just amperage that kills you, you have no control over it because you’ll never know how much resistance you’re creating for the circuit to travel. It’s an unknown variable that’s supposed to be infinitely large but, if you’re getting shocked, it’s something lower than infinity. I household circuits, your drawn amperage will be much lower than the 15a circuit breaker and it won’t trip to save you. That is where GFCI circuits come into play by detecting incorrect electricity paths rather than amperage overload. 15a circuit breakers prevent fires. GFCI prevent death.