What is the meaning of YJVVV and VV22-4 * 25 + 16 in electrical appliances?
General 2.5 square wire load is 2 kilowatts, and rubber sheathed cable, full load can reach 3 kilowatts are no problem (estimated again, it is not safe). The load level of the wire is mainly dependent on the current, but also on the voltage level. Under normal circumstances 50A below 1 square millimeter safe carrying capacity is 6A, 50 ~ 100A current 1 square millimeter of the safe carrying capacity is 5A, 100A current above the general take 1 square millimeter of the safe current is 2.5A; so many large square copper cable You can calculate the current. According to the three-phase alternating current formula: P = 1.732 * U * I * cosφ, cosφ is the power factor, select 0.8; this is the three-phase power calculation formula. Single phase: P = U * I * cosφ, cosφ is the power factor The power factor is 1 for the resistive load and 0.8 for the inductive load.
Should be caused by power line interference. You can buy a shield with the copper wrapped in audio cable and then placed next to the power cord can be, electronic city should have to sell.
2.5 square copper (green, with the threading tube) theory will be able to withstand about 20A current, consider the pipe, temperature and other factors, so according to the actual can withstand about 3 kilowatts of power. In fact the 2.5MM2 copper wire is generally open 16A can withstand about 3.4 kilowatts of power.
