1. In case of electrical equipment fire, the equipment that can be put out by electricity are 12 1 1, carbon dioxide, carbon tetrachloride, dry powder, etc.
2. The maximum safe voltage is 42 volts, the safe DC current through people is below 50mA, and the safe AC current through people is below 10mA.
3. Restart the running motor after stopping. Allow hot start 1 time and cold start 2-3 times.
4. The protective measures for electric machinery and equipment used in construction are as follows: protective grounding must be adopted, and grounding must be repeated at the same time.
5. Protective zero connection refers to the interconnection between the uncharged metal part of electrical equipment and the protective zero connection of power grid under normal circumstances.
6. Protective grounding is to connect the conductive part of voltage closely to the ground that may be dangerous under fault conditions.
7. Repeated grounding means that one or more places on the zero line are reconnected with the earth through grounding devices, and its safety function is to reduce the voltage of leakage equipment to the ground; Reduce the risk of electric shock when the zero line is broken; Shorten the duration of shell collision or ground short circuit; Improve the lightning protection performance of overhead lines.
8. The basic elements of electrical safety are (electrical insulation, safe distance, current-carrying capacity of equipment and its conductors, obvious and accurate signs, etc.). It is the basic element to ensure the safety of electricity use. As long as these elements can meet the requirements of safety regulations, the safety of electricity consumption under normal circumstances can be guaranteed.
9. There are two kinds of harm caused by current to human body: electric shock and electric injury.
10, patrol and check the power distribution equipment, close the door after entering and leaving the power distribution room, and lock it when patrolling.
1 1, and the power distribution room shall be equipped with necessary safety appliances and fire fighting equipment.