Yes. If you have multiple wires that you want to monitor, for the same phase of your electrical system, you can use multiple CTs, one for each wire. In this case the CT leads would connect to the same ports on the meter. The current in each of the wires will be added together. This, along with the voltage reference for the phase that the wires are on, will provide a sum of the electrical usage from all of the wires.


It is critical that all of the wires are on the same phase of the electrical system.

In this image there are 2 phases.  For Line 1:  The CT black wires from CT1A and CT1B go to Port 1 on the Omnimeter.  The CT white wires from CT1A and CT1B go to Port 2 on the Omnimeter.  etc.

The CTs will combine outputs to the meter.  Be sure that if the parallel cables on Line 1 are 400 amps all together for example, that you use two 400 amp CTs on the parallel Line 1 cables. (you don’t want to use 2 of the 200 amp CTs on each phase in this example)


You can also pass multiple wires through a single CT, as long as all of the wires are on the same phase.  Here is an explanation of how to: pass multiple wires through the same CT