I don't know where you heard the rumor, tell me that the short circuit of 1 and 2 ports will slow down the energy metering.

This is an inaccurate statement.

First: Ports 1 and 2 of the electric energy meter are sampling voltage and current. Why use manganese copper sheet? Because copper has high density and good linearity, unlike ordinary iron sheet, the voltage and current of 220V are connected to the metering chip in two ways. The voltage and current of 220 can't be directly connected to the metering chip, so all samples are converted into equivalent current signals through manganese copper sheets and connected to the metering chip for metering.

Second, the ports 1 and 2 of the electric energy meter are made of manganese copper sheets, which are short-circuited. If it is short-circuited outside, it does not mean that it has no effect on current sampling, but it has little effect. After leaving the factory, the measurement error of the electric energy meter is calibrated within plus or minus 0.5.

You shorted ports 1 and 2 outside, causing a wrong jump of about-1.5. Do you think that the error jump is big and small,

100 kwh, how many meters is 2-5 kwh? It's completely unnecessary, so don't use those crooked brains. The above explanation is suitable for learning and communication.

It is forbidden to steal electricity illegally. I am not responsible for it.