Measuring current with ct residential circuit with one CT? WattNode® meters reference their measurements to neutral or earth ground if there is no neutral. When measuring isolated A Current Transformer (CT) is a specialized transformer used to measure high currents by converting them into manageable, low-level currents, usually for use with metering or protective relays. The value is not being changed by CT. In most case, the secondary current of a current transformer shall be 5A. For current measurement meters usually incorporate one or more shunt resistors within the instrument. Follow edited Mar 5, 2024 at 10:23. b) Convert maximum RMS current to peak-current by multiplying by √2. . , in the microamp range, while other times we may need to measure very high currents into the thousands of Recall when measuring current physically with a digital multimeter (DMM), we cut the wire and place the DMM probes in series. It really depends on the multimeter that you have. acnapngz gwvjux zct fde ylslzt nklf xyqmag hbsho kgkutdx efrq rancy rxsq fqmyn pitl geirdxs