NO.
What you are describing could potentially kill the folks that are trying to help restore power to your home. You're also creating a situation where you could easily overload your generator.
To do this the right way, you'll need to install a transfer switch. Transfer switches allow you to switch between two source of electricity, while mitigating any hazards associated with using a secondary source of power.
The transfer switch will be wired in such a way, that backfeeding and/or overloading the generator will be prevented (without a lengthy start up procedure). Once the transfer switch is installed, you'll simply have to...
- Connect the generator to the inlet in the garage.
- Start the generator.
- Flip the switch(es) at the transfer to the GEN position.
Probably a bad breaker, but the symptoms are also consistent with a mild overload causing the breaker to heat up and trip over time, the longer you let the breaker cool before resetting, the longer it takes for it to heat up and trip again.
I'd leave it turned off until you've ruled out a short in the wiring or other overload condition causing it to trip - if it's a short somewhere, that short is causing a lot of heat somewhere in the walls or other inaccessible place.
It's possible that the wiring is not straightforward and there's a load connected to the breaker that you're not aware of - like maybe the toaster in the kitchen is on the same circuit so be aware of what other appliances in the house may be in use when you experience the trip.
The hard thing about finding a short circuit is that if it's due to, say, a bad connection in a junction box under the floor, it may not short out until you walk near it and make the wires flex enough to touch. If you notice any kind of burning smell associated with the trip, keep the breaker turned off until someone finds the problem.
Some types of breakers are subject to "nuisance tripping" even without any overload or wiring problems - if you have an AFCI or GFCI breaker, you could be experiencing nuisance trips due to a device that's plugged in.
If you have 20A service to your bedroom, you're probably in a newer house (15A is more typical, especially in older construction), so a short is less likely than if you're in an older house so the most likely cause of the problem is a bad breaker. Hopefully the landlord had his electrician swap out the breaker since a breaker is relatively cheap compared to having the electrician make another service call.
The consequences of a short somewhere are severe enough (i.e. a fire in the walls or other inaccessible area) that it's worth ruling out a short before you leave the circuit turned on. If the landlord can't fix it to your satisfaction, hire an electrician of your own and bill it back to the landlord. Even if it's just a bad breaker, the landlord is responsible for wiring problems.
The fact that it stays on after waiting 5-6 hours probably means that it's not a short, but I wouldn't dismiss any repeated circuit breaker trips since the circuit breaker is your only warning about a dangerous short in the wiring.
Best Answer
You've touched on the reason why electric utilities use high voltage for their distribution lines and also why you see transformers either on poles at your location or on the ground in a (usually) green box.
They do this to avoid power loss in the wires which increases with the square of the current. Mathematically, you have:
P = I^2 * R where P is power in Watts, I is current in Amps and R is resistance in Ohms.
Let's take two hypothetical examples that demonstrate this:
You want to transmit 1800W, which is 15A at 120V through a distance of 500' using a wire which has resistance of 1 Ohm. The power lost to heat in the wires in this case will be 15^2 * 1 = 225W. So you put 1800W in at the source but you only get 1575W at the load.
Usually for consumers this doesn't play out all that often although that is one reason why high power consuming appliances like water heaters, HVAC systems, ovens and ranges almost always use 240V vs. 120V. The current requirements are 50% by using the higher voltage.
Consider that the power utilities are transporting megaWatts of power and often at very high voltages. The long distance towers you see may operate at 750K to 1,000,000 volts.
Now there are some other considerations. Transformers are not lossless, so you lose some power, again due to heat, when you step-up and then step-down the voltage. But the savings overall due to using smaller and cheaper wire and long term operating costs due to lower power losses may make it worthwhile.
As noted above, 2AWG Cu wire is quite expensive. Usually for longer distances Al wire is a much better value although you will usually need to go up a gauge or two in order to get the same performance.
By the way, you mentioned "AMP loss" in the wiring. That's not really a thing. Amps are not lost, for every Amp you put in one end of the wire, you get a corresponding Amp out the other end. You do lose Volts and that's where the power loss comes in.