S*******s
发帖数: 13043 | | f****i
发帖数: 20252 | 2 transfer switch
【在 S*******s 的大作中提到】
: 怎么能让它工作的时候家里和电网断开呢?
| s******t
发帖数: 1956 | 3
安全的话，装个 transfer Switch。
胆大的话，把电网开关全关掉后，把发电机输出直接接墙的开关上。
包子， please.
【在 S*******s 的大作中提到】
: 怎么能让它工作的时候家里和电网断开呢?
| q*z
发帖数: 13362 | 4 transfer switch
【在 S*******s 的大作中提到】
: 怎么能让它工作的时候家里和电网断开呢?
| f****i
发帖数: 20252 | 5 靠，从支线送电？
【在 s******t 的大作中提到】
:
: 安全的话，装个 transfer Switch。
: 胆大的话，把电网开关全关掉后，把发电机输出直接接墙的开关上。
: 包子， please.
| j****i
发帖数: 68152 | | q*z
发帖数: 13362 | 7 发电机过载了也不够呀
【在 j****i 的大作中提到】
: 发扬雷锋精神，直接接入电网，向整个小区供电
| F***Q
发帖数: 6599 | 8
interlock
http://www.youtube.com/watch?v=GbtRxcb-cmA
【在 S*******s 的大作中提到】
: 怎么能让它工作的时候家里和电网断开呢?
| x***m
发帖数: 5 | | m***y
发帖数: 14763 | 10 Back-feeding is actually legal, as long as there is a break-before-make
mechanism.
The real widow maker is plugging into the dryer outlet. That's how it's
traditionally done in America :)
The needed cable is no longer available commercially, but you can putting a
dryer cable and a generator cable together. The correct starting order is
1. Turn off the main switch and all breakers.
2. Plug the home-made cable into the dryer outlet.
3. Start the generator.
4. Selectively turn on and off the breakers.
When the electricity is back,
1. Turn off all breakers.
2. Stop the generator.
3. Unplug the home-made.
4. Turn on main.
5. Turn on breakers one by one.
【在 f****i 的大作中提到】
: 靠，从支线送电？
| | | m***y
发帖数: 14763 | 11 This is only for museum display.
Don't do it at your home. It's illegal and will kill!
a
【在 m***y 的大作中提到】
: Back-feeding is actually legal, as long as there is a break-before-make
: mechanism.
: The real widow maker is plugging into the dryer outlet. That's how it's
: traditionally done in America :)
: The needed cable is no longer available commercially, but you can putting a
: dryer cable and a generator cable together. The correct starting order is
: 1. Turn off the main switch and all breakers.
: 2. Plug the home-made cable into the dryer outlet.
: 3. Start the generator.
: 4. Selectively turn on and off the breakers.
| A******D
发帖数: 1075 | | m***y
发帖数: 14763 | 13 The dryer cable end is male, if you take it out, anything getting contact
with it is zapped.
And if you forget to turn off your main, like others already pointed out, a
utility worker got killed at the light speed. No, your generator won't be
able to power up the whole grid, but enough to kill one innocent worker.
【在 A******D 的大作中提到】
: 请问是如何kill的？危险出在哪一步？
| m***y
发帖数: 14763 | 14 The non-killing factor is, the required starting power of motors (in your
fridge, well pump, sump pump, AC fans, etc.) is much larger than the nominal
, so, if you don't start them one by one, boo! There goes your generator.
It doesn't kill anybody, except the generator :)
【在 A******D 的大作中提到】
: 请问是如何kill的？危险出在哪一步？
| s**********a
发帖数: 3273 | 15 I have never heard that a generator got blown due to starting power.
First, there is always a fuse on the generator.
Second, only long-term overloading will cause overheat and blow
something. A blink overload will only drop the voltage. It's not
good for the generator and other appliances, maybe damage something,
but won't kill somebody.
The only possibility to blow your generator is to forget disconnect
it from the grid. When the grid is up, that can burn your generator
in a second.
nominal
【在 m***y 的大作中提到】
: The non-killing factor is, the required starting power of motors (in your
: fridge, well pump, sump pump, AC fans, etc.) is much larger than the nominal
: , so, if you don't start them one by one, boo! There goes your generator.
: It doesn't kill anybody, except the generator :)
| o**o
发帖数: 3964 | 16 An interesting topic. If you google, a lot of such "killing" posts are by
electricians, or no brainer follower. By this standard, gas range, furnace,
driving, or even BBQ are actually more dangerous.
a
【在 m***y 的大作中提到】
: The dryer cable end is male, if you take it out, anything getting contact
: with it is zapped.
: And if you forget to turn off your main, like others already pointed out, a
: utility worker got killed at the light speed. No, your generator won't be
: able to power up the whole grid, but enough to kill one innocent worker.
| m***y
发帖数: 14763 | 17 //shrug
So we know yours got fancy protection, good for you. The standby generators
usually can smartly shutting down some circuits to save the horsepower, but
most portables can't do that.
You are right, the duration of overloading is a more important factor, but
frequency of overloading also play a role in shortening the lifetime.
【在 s**********a 的大作中提到】
: I have never heard that a generator got blown due to starting power.
: First, there is always a fuse on the generator.
: Second, only long-term overloading will cause overheat and blow
: something. A blink overload will only drop the voltage. It's not
: good for the generator and other appliances, maybe damage something,
: but won't kill somebody.
: The only possibility to blow your generator is to forget disconnect
: it from the grid. When the grid is up, that can burn your generator
: in a second.
:
|
|
