Hook up wire are widely used for model planes,model cars,model ships,lamps,household appliances,electric heating appliances,meters,automotive repair wire，marine wire,instruments,electric toys, vehicle repair, small household appliances, robots, general mechanical equipment, etc.
If you use a stranded core, the wires are very flexible and the little wires inside are very thin. NUELEAD’s new design adds sponge inside the box to keep wires from cluttering. Use solid wire if you want it to stay bent. But you cannot use crimp connectors with solid cores.
Generally, the single-wire conductor determines the wire size according to the diameter, while the stranded wire determines the wire size according to the cross-sectional area. The larger the cross-sectional area, the greater the current that the cable can transmit, and the longer the transmission distance. Bigger wires (smaller gauge count) are always “better” because you’ll get less voltage
Drops and heat loss due to resistance, especially with longer wires. But larger wires cost more, are bulkier, and stiffer. So you need to determine what kind of wire to use according to different current and power.
Solid is not easy to bend and deform, and it is easy to fix. If your wiring range is relatively large and the line is very long, it is recommended that you choose stranded.
Solid Advantages: long service life, not easy to oxidize due to the small ratio of outer circle area / cross-sectional area, and resistant to short-circuit current impact.
Solid Disadvantages: The wire is hard, and it is difficult to straighten after bending. Repeated bending-straightening is easy to be injured, and it is labor-intensive when setting the small tube. It is mostly used in fixed and buried environments.
Stranded Advantages: Because the wire is relatively soft, it is mostly used in active electricity places and temporary electricity places, and it is easy to install, drag and drop and move.
Stranded Disadvantages: The service life is short. Due to the large ratio of outer circle area to cross-sectional area, the oxidation speed is fast. If it is impacted by short-circuit current, the surface will be seriously oxidized after high temperature, and the effective cross-section will be greatly reduced. The safe electricity should be replaced in time.
1. Measure DC voltage, such as battery, Walkman power supply, etc. First insert the black test lead into the “com” hole, and insert the red test lead into the “VΩ”. Select the knob to a range greater than the estimated value (note: the value on the dial is the maximum range, “V-” represents the DC voltage range, “V~” represents the AC voltage range, and `”A” is the current range ), then connect the test leads to both ends of the power supply or battery; keep the contact stable. The value can be read directly from the display. If it displays “1”, it means the range is too small, and the range must be increased before measurement. If “-” appears on the left side of the value, it means that the polarity of the test lead is opposite to the polarity of the actual power supply. At this time, the red test lead is connected to the negative pole.
2. Measure AC voltage. The test lead jack is the same as the DC voltage measurement value, but the knob should be set to the required range for the AC range “V~”. There is no positive or negative AC voltage, and the measurement method is the same as before. Regardless of measuring AC or DC voltage, please pay attention to personal safety and do not touch the metal part of the test pen with your hands.
1. Measure DC current. First insert the black test lead into the “COM” hole. If the measured current is greater than 200mA, insert the red test lead into the “10A” jack and turn the knob to the DC “10A” range; if the measured current is less than 200mA, insert the red test lead into the “200mA” jack , And then turn the knob to an appropriate range within 200mA DC. After adjustment, measurement can be performed. Insert the multimeter into the circuit, make it stable, and then you can read it. If “1” is displayed, the range must be increased. If “-” appears on the left side of the value, it means that the current flows from the black test pen into the multimeter. Measurement of alternating current. The measurement method is the same as 1, but the gear should be set to AC gear. After the current measurement, the red pen should be reinserted into the “VΩ” hole.
Insert the test wire into the “COM” and “VΩ” holes, turn the knob to the desired “Ω” range, and then connect the test wire to the metal part at both ends of the resistor. During the measurement, you can touch the resistor with your hand, but do not hold your hand at the same time. Touch the two ends of the resistor, which will affect the accuracy of the measurement-the human body is a conductor with a large resistance but a limited size. When reading, keep the test wire in good contact with the resistance; pay attention to the unit: the unit within the range of “200” is “Ω”, the unit within the range of “2K” to “200K” is “KΩ”, and the unit is “2M” and above. MΩ”.
Alligator clips are elastic metal clips with multiple serrated jaws used to establish temporary electrical connections. People named it because it looks like the mouth of a crocodile. It is used to connect cables to batteries or some other components. In laboratory research or when used by some electronic hobbyists, these clamps are usually crimped or soldered to the cable, and they become the connection between the test circuit and the laboratory equipment or other circuits.
Another larger clip, called a car clip or battery clip, is usually made of pure copper with low resistance and is used with insulated cables to establish the connection between car batteries. These currents can directly supply power to the car’s starter motor, which is an indispensable tool for car repairers.
Test leads are not just a means of connecting your digital multimeter to the device under test, they are also an integral part of the entire measurement system.
The test lead is usually made of a cable with elastic material to maintain its flexibility, and the wire can usually conduct 15A or 20A.
A typical voltmeter probe consists of two single-wire test leads of different colors. One end of the test line has a safety banana plug that can match a multimeter, and the other end is a cylindrical tubular plastic part. The handle allows people to hold and guide the alignment, which is safe without affecting the measurement.