A few questions about light bulbs and electric switches

Hello! 1.When replacing the light bulbs in your home, it is best to disconnect your own main power circuit breaker;

2.If the bulb is replaced with electricity, there should be no water on the hand, no water on the lamp head, and no fingers should touch the metal in the lamp holder. To prevent electric shock, you can stand on a wooden stool and work with one hand.

In addition to conductive things such as metal, dry some paper, cloth, and wood have a certain insulating effect.

3.According to the phenomenon you described, there is a short circuit in the light control circuit in your living room, because the power supply of all the lights is controlled by a circuit breaker, and if there is a short circuit, the power will be jumped, and the lights will be completely extinguished. Since the socket is controlled by another circuit breaker, the light on the socket is still on, which is a must.

4.There is a short circuit phenomenon in the lamp holder or line, or the phenomenon of leakage. In addition, there is a problem with the quality of the energy-saving lamp you bought. There is a short circuit phenomenon inside itself.

If you have any questions, please say. I wish you a speedy solution to your confusion.

1. Turn off the power supply or cut off the power switch;

2. If the power switch is turned off or the power switch is cut off, the bulb can be replaced directly.

3. Yes, the power supply is not the same way, so the light in the bedroom is still on after the trip.

4. Either there is a problem with the replacement of the energy-saving lamp, or there is a problem with the power line, take down the energy-saving lamp and replace it with other bulbs, if there is no problem, it means that it is a problem with the energy-saving lamp.

1. Stay safe.

2. Just step on a wooden stool, and the plastic belt is also insulated, preferably with insulated gloves.

3 should be distinguished, the gate with lighting and socket is separate and independent.

4. Try to change the bulb, if it still trips, it means that it is a problem with the line, if you change a bulb and does not trip, it means that it is a problem with the bulb. If it's a line problem, it's best to find a more professional electrician and take a look!

Satisfied?

1. Turn off the power first, and the wattage of the bulb should be the same as the wattage of the bulb used before, otherwise there will be a phenomenon of a calf pulling a cart and a bull pulling a cart.

2. People are conductors, with insulating things, such as rubber gloves.

3. There is only one reason for tripping, a short circuit, which may be a short circuit caused by moisture.

4. The wattage of incandescent lamps and energy-saving lamps is not the same, so they will trip; The wattage of the white paper lamp is large, the wattage of the energy-saving lamp is small, and now it is a big cow pulling a small car, change the way of thinking, the car is too small, the cow has a lot of strength, and it is not safe, so it trips.

1. According to the provisions of the "Electrician Safety Operation Regulations": when working on the electrical lines (equipment) of all or partial power outages, the equipment (lines) must be disconnected from the power supply, and the parts and equipment (lines) that may be powered should be taken to prevent sudden power connection, and short route protection should be made if necessary;

2. When overhauling electrical equipment (circuits), the power supply should be cut off first, the distribution box should be locked (the knife switch should be cut off, the insurance should be removed), and the warning sign of "someone working, no closing" should be hung, or a special person should be sent to take care of it. When the power is tested after the replacement of parts, the hand can not leave the power switch, and the power must be cut off immediately when it is found to be smoking or igniting to avoid the expansion of the fault;

3. Low-voltage switch operation sequence:

1) Disconnect the air switch and isolation switch of each branch of low pressure;

2) Disconnect the low-voltage main switch.

Yes, because only by closing the switch can there be no current at the bulb connector to feel safe and prevent electric shock.

It's better to turn off the switch, after all, electric tigers! Safety first!

It's best to turn it off for safety.

1. According to the provisions of the "Electrician Safety Operation Regulations": when working on the electrical lines (equipment) of all or partial power outages, the equipment (lines) must be disconnected from the power supply, and the parts and equipment (lines) that may be powered should be taken to prevent sudden power connection, and short route protection should be made if necessary;

2. When overhauling electrical equipment (circuits), the power supply should be cut off first, the distribution box should be locked (the knife switch should be cut off, the insurance should be removed), and the warning sign of "someone working, no closing" should be hung, or a special person should be sent to take care of it. When the power is tested after the replacement of parts, the hand can not leave the power switch, and the power must be cut off immediately when it is found to be smoking or igniting to avoid the expansion of the fault;

3. Low-voltage switch operation sequence:

1) Disconnect the air switch and isolation switch of each branch of low pressure;

2) Disconnect the low-voltage main switch.

When replacing or repairing a light, always make sure that the light is turned off. If there is a problem with the wiring, or the status of the light switch cannot be determined, the distribution box should be disconnected directly.

within the electric brake. Remove damaged lamps and bulbs.

Before removing a damaged lamp or bulb, make sure the power is turned off. If it is not possible to confirm the opening and closing status of the power supply due to damage, you can use an electric pen.

Check whether there is current flowing through the conductive part of the lamp at the interface to help confirm. Safety is paramount, so be sure to make sure the power is disconnected before proceeding. Of course, maybe the above operation is more complicated, so there is another trick, simply turn off the control switch of the ** road where the light is located.

When the power supply is disconnected, you can remove the damaged bulb by hand. If it is a high light, you may need to use a climbing tool similar to a herringbone ladder, so remember to pay attention to safety when climbing the height.

If you have a fully enclosed lampshade, you need to open the lampshade before you can see the lamp hidden inside. Taking the round house price ceiling light as an example, the rest of the disassembly methods are basically the same. Around the round lampshade, you can generally touch a number of small buckles with your hands, and when you open these small buttons, the lampshade will be detached from the base.

At this point, the lamp inside is exposed.

Continuing to take the round ceiling light in the room as an example, the lamp inside is usually a ring tube, and the interface is something similar to a plug. Unplug that little plug and snap a few flexes.

The clamp allows the lamp to be easily removed. If it is a horizontally pluggable U-shaped lamp, we need to carefully unplug the clamp to disconnect the lamp slightly from the clamp, and then pull it out with a little force. (This method is similar to the common method of disassembling the lamp tube of a table lamp.) ）

Other forms of bulbs are mostly threaded and old-fashioned bayonets (now largely obsolete), and they need to be held and rotated slightly when disassembled. The bayonet can be removed by screwing into one position, and the thread is screwed so that it can be removed from the connector.