False measurements with power supply - 4 circuits power meter

I connected the energy unit for several weeks. conclusions measures:

energy meter

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O Clamp Meter A

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O Clamp Meter B O Clamp Meter C O Clamp Meter D !

! ! ! !

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lighting ventillation induction hob rest of the installation

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My energy meter measure 99 kWh

Clamp meter A : 77 kWh & 112 kVA --> an error of more than 20%

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-when my induction hob does not work :

Clamp Meter D measures : 0,15 A & - 2,35 W (negative power) & 35,7 VA

Clamp Meter A measures : 0,75 A & 110 W & 174 VA

- when my induction hob works

Clamp Meter D measures : 13,4 A & 3 052 W & 3 084 VA

Clamp Meter A measures : 12,6 A & 2 802 W & 2 914 VA

The Clamp Meter A is less than the Clamp Meter D --> impossible

Negative active power --> impossible

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The measures is not reliable !!! what do you do?

I remain at your disposal for further information

(I'm french, sorry for my poor English)