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Two decisions — where the CT sits and which way its arrow faces — cause more hybrid misbehaviour than almost anything else on a Kent installation. Both have a single, definitive Kent answer, and both must be confirmed with a live test before sign-off.
For trained and authorised installers only. Isolate the AC conductor before clamping.

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Location: the grid connection point, every time

The CT clamps on the live conductor at the grid connection point — the main incomer. That is the only position where it sees the site’s total import and export in a single measurement. On a sub-circuit or load branch, the CT sees only the slice of current flowing through that one circuit. Every control decision built on that partial view is wrong — self-use logic, export limiting, and the display figures are all corrupted.

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Direction: arrow toward the grid — the universal Kent rule

On both Kent platforms, the arrow printed on the body of the CT points toward the grid. The Kent G3 source manual is explicit about the consequence: installed in the wrong direction, the hybrid cannot work normally.
Do not apply arrow conventions learned from other brands or online videos. Arrow-to-load conventions exist in the market and appear in widely viewed installation content. On a Kent system, the rule is arrow toward the grid on both platforms, and it is confirmed by the live test below — not by recollection.

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Prove it live — the convention-proof test

Arrow direction can be argued; what the display shows with the grid on and PV off cannot. Run this test at commissioning and after any CT rework:
1

Grid ON, PV OFF

Open the DC switch so no PV is generating. Grid connected, battery idle.
2

Confirm import on the display

The display must show the site importing from the grid. If it shows export or zero with loads clearly running, the CT is reversed or on the wrong conductor.
3

Step a heavy load

Switch on a high-current load (geyser, kettle, iron-class). The grid import figure must rise by the load’s wattage, same sign. Photograph the display.
4

Kent G3 three-phase sites: repeat per phase

Step a known load on each phase in turn and confirm each phase reading rises independently on the display.
The full pass/fail criteria and the record-keeping requirement are in Energy-Flow Test.

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The software direction settings — physical before digital

Both platforms hold a CT orientation item in their settings menus. The Kent rule is to fix the physical installation first. The software setting describes the truth — it does not repair a miswire.
PlatformMenu itemCorrect physical installSoftware fallback
Kent M1Meter CT orientation (towards the grid)Arrow physically toward gridConfirm in LCD Advanced
Kent G3CT direction → Forward / ReversalArrow physically toward gridReversal only when CT cannot physically be re-clamped
Use Reversal only when the CT is physically inaccessible and genuinely cannot be re-clamped. Do not use it to resolve a location error or a phase-mapping error — those require physical correction.

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Common mistakes

There is no workaround for a CT on the wrong conductor. The control logic is blind to the rest of the site. Reach the main incomer.
The live test is mandatory. A remembered convention is not a substitute.
Reversal corrects a physically reversed clamp. It does not correct a CT in the wrong place.
Direction right, phases crossed is still a fault. That failure mode is on Meter & Phase Matching.