When changing the bulb, they still do not light switches turned off, so the chance of electrical shock accidents to occur is because it does not turn off power switch and fall from the paper because of the scroll box.
While he has not changed a light bulb switched off lights, so the chance to be warm Cards electric shock occurs is because the light switch off and fall from the scroll box.
While trying to change the light bulb, he has not closed the light switch so the chance to be อุบัั accident is shot, but because no electrical switch fire and fall from paper because the box move.