How many sensors?

[rong]

How many current sensors can you connect to one series 2000 meter?

[Rick Blanchard]

Paralleling up to 3 sets of current sensors per meter is the maximum. Be sure to read the rules for multiple load monitoring.

Multiple loads may also be monitored with 1 set of current sensors.
Paralleling Multiple 3 Phase Loads with one Set of Current Sensors.

The preferred way to parallel loads is with one set of three current sensors. There would be no need to multiply the reading when using this installation method.

Verify that all circuits are being fed from the same source transformer. You cannot mix different voltages 120/208 & 277/480 nor have multiple distribution transformer sources.

When selecting a meter, size the meter and current sensor for the largest of any one load being monitored.

For example 480 volt panel with two 3 pole 100 amp breakers and one 3 pole 125 amp breaker. The largest load by any one sensor is 325 amps. Specify the 480400KIT (480 volt 3 phase 400 amp kWh meter complete with 1 set of three split core current sensors) .

Parallel all the circuits for each phase through each of the current sensor for that phase. Line & load phase correspondence must be the same. Make sure all A-phase circuits are ran through the A-phase sensor, all the B phase circuits are ran through the B phase sensor and all the C phase circuits are ran through sensor C.

Check the sensor technical page and verify the opening is large enough to accommodate the paralleled wires. If you need a larger opening; move up to the next size meter/sensor combination. E-Mon meters are highly accurate. Accuracy Certified to ANSI C12.16 (+/- 1% from 1% to 100% of rated load). This means a 3,200 amp meter only needs 32 Amps to be +/- 1%!