It turns out that the switch for the electric fire cannon in our unit often burns out. At first I thought it was because the power of the switch was too low, but I replaced it with a bigger one and it's still there. I broke it later, I thought it was due to the aging wires in the unit so I changed the wires in the unit. This is still not resolved. Later, a friend told me that some knife switches were made of iron and not copper, but simply covered with a layer of copper. Everyone knows that the conductivity of iron is not as good as that of copper. This fake copper has high resistance and will generate heat if heat builds up it will burn. Let me tell you how to deal with easy burnout of knife switches and how to identify genuine and fake knife switches. Calculate the load current of the reed switch. I = P/U, P is the sum of therated power of all electrical appliances and U is the rated voltage, so that the rated load current of the knife switch can be calculated. The rated power of electrical appliances will be indicated on the electrical appliances. After calculating the rated load current, you will know what size reed switch you need to purchase. If the rated load current you calculated is 8A, then the reed switch you buy should be more than 8A. 10A is about the same, it is too big. . He won't be able to protect you.
Identify the quality of the knife switch. The live parts of the knife switch must be made of copper, otherwise they will heat up and burn easily. There are two ways to identify copper. Method 1: Use pliers to break off the piece of copper. If you see the broken part is copper colored, it's real. If the colored part fer (slightly white, metallic shine) is iron. with copper, it's fake. But the principle of this method is to break the parts, which obviously cannot be used when selecting products. Method 2: Prepare a magnet before going to the store. Real copper parts cannot be attracted to magnets, but iron treated with copper can still be attracted to magnets. Knife switches of approximately the same size, made of iron and copper (real and fake), will also have a big difference in price, so you can judge approximately.
The electric fire barrel will automatically turn off after 4 hours. According to relevant public information, when the electric fire bucket is used for 4 hours, the circuit will automatically cut off the power and resume cooling. The electric fire barrel, also called electric fireplace, electric brazier, commercial heaterfoot ande, solid wood radiator and solid wood electric radiator, is a new type of energy-saving radiator.