But there is also an oxygen candle above every seat in passenger airplanes, right? Then it would be a consumer product ...
Similar - a residential electrical service panel. It's generally okay for even a little kid to flip a wall-mounted light switch. Touching the circuit breaker handles on the service panel is a "competent adults, paying close attention, only at need" activity. And digging inside that service panel should only be done by professionals.
Kindly screw off with the FUD peddling.
You should be able to flip breakers all you want without doing anything more than annoying people by interrupting whatever those breakers were powering.
A breaker panel is designed so that you need to get out a screwdriver and remove fasteners to get near anything that might hurt you.
Unless someone is actively working on a circuit <insert a bunch of low effort comments about the virtues of lock out tag out here> you shouldn't be able to hurt anyone or anything by flipping a breaker on or off. Breakers protect the wires. Devices are responsible for their own protection. Incomplete circuits get capped to prevent shorts to ground or elsewhere.
But you've never had grandkids who got interested in playing with the breaker panel, have you? Nor almost gotten yourself electrocuted, when you trusted a "not quite so sharp as they once were" older relative to turn off the specific 20A circuit that you were working on?
Also worth noting - residential circuit breakers, even new (vs. decades-old plastic that's getting kinda brittle) are often rated for vastly fewer on/off cycles than even the crappiest old wall-mounted light switch.
But that wasn't your original assertion, stop moving the goal posts.
Don't ask incompetent electricians to help you with electrical work. Check!
That's very much not the case. A light switch, at least in the US, is just 120V. Sure, it could kill you, but 99.999% of the time it'll just annoy you if you touch the hot wire inadvertently. You can easily get 240V inside the panel, however, and on top of that you can easily get it at 200A. I'm a lot more careful when I've got the panel cover off for any reason.
The 200A is a danger. A direct short from a bus bar to ground can peak at 1000s of amps before the main breaker blows.
240V at 200A would burn you crispy, but it's a bit challenging to get to.
120V at a fraction of 1A can disrupt/stop your heart, and it's easy to get inside a service panel.
It's been clear throughout the thread, but yes -- don't open breaker panels and work on them casually.
Flipping a breaker in a closed, code-compliant panel is exactly as safe as flipping a lightswitch in a closed, code-compliant wall box.
I must have misunderstood, then -- you said light switch wiring is as dangerous as breakers, and breaker wiring can only be found inside the panel.
It involves the safety of requesting an inexperienced person to flip breakers.
you hope.
zinsco breaker panel boxes are still commonplace in the united states on older properties; they require no fasteners to open up and are (mostly) bussed in such a way that they're extraordinarily dangerous when open.
Still, I agree with the spirit of your message -- but let's be clear, household electrics are dangerous, and not every breaker panel is going to be designed with safety in mind.
The faultiness of Zinsco panels are not a special concern with flipping the breakers. They're just faulty. And you don't even need to open them to be dangerous, they have corrosion and heating problems.
> not every breaker panel is going to be designed with safety in mind.
Well, to be fair -- of course they were designed with safety in mind. They just failed.
But yes, replace any Zinsco panels! Also some Federal Pacific and Challenger/GTE-Sylvania panels. This should be caught in a home inspect, and most home insurance companies will make it a requirement of coverage.
But re: tripping the main -- this is likely a fault in the breaker itself. It's not likely that a faulty line breaker allowed enough current to trip the mains breaker (though it does happen, but see below). Of course several overloaded lines can trip the mains, but this is exceedingly rare. A fault in the mains breaker is a serious problem for sure. However, unless you inspected the wiring yourself, I'd hesitate to assume that it was miswired as you describe.
In standard US residential service, you get two 120V lines ("legs"). If the mains breaker failed, it's possible to lose one of those legs to the buss that supplies the line breakers (and the house fixtures), while the other leg stays up and powering the "other half" of the house. In this case, 240V appliances will appear to be "out" because they are only getting partial power (240V is really just two 120V services, 180degrees out of phase).
So I'd guess the cause was a failed/fatigued mains breaker. That's a job for an electrician, regardless, who would surely notice miswiring if present, and the other code violations that you definitely had.
I've done a lot of electrical work in old houses, but only in big cities where a failing inspection is just not tolerated. I've seen old country homes where regulation is ... less strict. This might not be an urban/rural divide, but that's my experience having lived in both.
I'm amazed that you were able to buy or sell a house that did not pass inspection. If the buyer was financing, the mortgage would require insurance, which would require inspection. In a cash sale, the buyer should be sophisticated enough to take responsibility for the repairs.
I think (in my high-regulation states) it's actually not legal to sell a house that does not pass a safety inspection. At least not without surrendering the certificate of occupancy until repairs are completed and inspected.
This is not accurate.
Circuit breakers are just lightswitches with the ability to switch themselves OFF.
The larger breakers (you mention "handles" instead of "switches") are the same, although rated for higher current than typical household lightswitches.
The breaker panel is just a grounded metal box. It is not dangerous to touch, except in fault cases where the whole building has dangerous power.
And just like you should not unscrew a lightswitch cover unless you know what you're doing, you should not unscrew a breaker panel cover.
Same rules -- but if you break them, the difference becomes important: Inside the breaker panel, it's possible to come into contact with higher current sources than inside a lightswitch box.
If so, you should get it replaced right away. Easy access to the internals is the least of your concerns -- these panels are unsafe as designed, and responsible for much fire and death.
Just because something in a consumer product does not mean that thing, by itself, is a consumer product. Or at least us using the term "consumer product" is stretched near the breaking point if you look at things that way.