Electrical Frequently Asked Questions and Knowledge (5)

Update date:2018-03-28 Source:MAXGE

Electrical Frequently Asked Questions and Knowledge (5)

Home safety knowledge

(1) For household appliances that require protective grounding or zero-crossing protection, three-pin plugs and three-eye sockets shall be used. Do not use two-pin plugs and two-eye sockets instead, resulting in a grounded (or zeroed) line gap.

(2) There is no joint in the middle of home wiring. When there must be a connector, it should be in firm contact and wrapped with insulating tape, or a porcelain junction box. Standard medical tape instead of electrical tape dressing joints.

(3) The connection between the wire and the switch, knife gate, fuse box, lamp cap, etc. shall be firm and reliable, and the contact is good. The soft plastic copper wire connector shall be twisted and then placed under the joint screw gasket to prevent the thin strands from spreading and causing a short circuit on the other joint.


(4) Home wiring shall not be laid directly on the flammable building materials. For the wiring on wood, porcelain beads or porcelain clips must be used; through the wood, porcelain casing must be used. Do not use flammable plastics and other flammable materials as decorative materials.

(5) Grounding or connecting the zero line is not charged during normal operation. However, if the leakage occurs after the disconnection, the outer shell of the power unit will be energized. In the event of a short circuit, the grounding line will also pass a large current. For its safety, the grounding (connected to zero) wire shall not be less than the phase conductor, and no switches or fuses may be installed on it, nor may there be joints.

(6) The grounding wire should not be connected to the water pipe (because the plugging of the tap water pipe is used for insulation, and there is no grounding effect); it must not be connected to the gas pipe (to prevent the gas explosion caused by spark); On the ground of the telephone line (in order to prevent weak electricity); also must not be connected to the lightning guide line (in order to prevent back lightning).


(7) All switches, switches and fuse boxes must have a cover. Aging and incomplete parts of the bakelite cover must be replaced. Dirty and damp persons must be wiped clean after use.

(8) Don't drag and drop the power cord on the ground to prevent the power cord from coming off and prevent damage to the insulation.

(9) Before the trial of the home appliance, check the instructions, place all the switches and buttons in the original stop position, and then follow the instructions to start and stop the operation sequence. If there are moving parts such as a moving head fan, consider sufficient space for movement in advance.


(10) When an abnormal condition such as spark, smoke, or burnt smell is found after the household appliance is energized, the machine shall be shut down immediately and the power must be turned off for inspection.

(11) When moving home appliances, be sure to cut off the power to prevent electric shock.

(12) Heat-emitting appliances must be kept away from flammable materials. Electric stoves, heating appliances such as heaters, irons, etc. must not be placed directly on the boards to avoid fire.

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