PC4713 split-phase (two-phase) wiring

PC4713-W, PC4713-W-485 (and the -TY / -E-TY variants)

The North American residential arrangement: two live legs and a neutral, one CT per leg. The meter reports both legs and the total.

Isolate the supply before touching any conductor. Wire colours in the clip are the demo panel's, not a requirement.

Step by step

  1. 1 Isolate the main breaker and prove all conductors dead.
  2. 2 Clip CT1 on leg L1 and CT2 on leg L2, both arrows towards the loads.
  3. 3 Land L1 on A, L2 on B and the neutral on N.
  4. 4 Land CT1 on IA+ / IA- and CT2 on IB+ / IB-.
  5. 5 Restore power and check that both legs read voltage and current.

Terminal reference

Power block N/C/B/A
A = leg L1, B = leg L2, N = neutral. C unused.
CT block IA+ IA-
Secondary of CT1, the clamp on leg L1.
CT block IB+ IB-
Secondary of CT2, the clamp on leg L2.

Before you start

  • Both legs are live with respect to the neutral; isolate both before wiring.
  • Keep each leg with its own CT: swapping the clamps swaps the legs in the data.

Common mistakes

  • Treating the two legs as phases of a three-phase system: the meter will not report a valid three-phase set.
  • Clamping the neutral to measure the second leg: the sum of the two legs is what the neutral carries.

Datasheets and quick start guides for every OWON model are in the documentation library. Not sure which model fits the supply? Send us the service details — we answer within one business day.

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