So, update: I got 22 and 18 Ω resistors and I’ve changed the calibration to 90.9 (for the 22) and plugged into the VCC, which I checked and gives ou 3.3V, thing is, with a hairdryer that gives 8.08A through the phase, the sensor is picking up these values:
Power Irms (A)
3507.67 15.25
3436.07 14.94
3400.69 14.79
3400.79 14.79
3398.95 14.78
3410.08 14.83
3393.31 14.75
3392.27 14.75
3405.54 14.81
3394.38 14.76
3392.86 14.75
3390.74 14.74
3414.15 14.84
3391.17 14.74
3392.68 14.75
3386.85 14.73
3408.00 14.82
3388.23 14.73
3387.80 14.73
With 18 Ω and calibration 111.1
4158.40 18.08
4176.55 18.16
4153.68 18.06
4176.81 18.16
4156.74 18.07
4157.29 18.08
4152.57 18.05
4163.34 18.10
4160.59 18.09
4159.35 18.08
4188.47 18.21
4160.26 18.09
4161.69 18.09
As for the Arduino Uno with 18 Ω and calibration 111.1
16115.05 70.07
16130.07 70.13
16072.24 69.88
16045.23 69.76
16123.20 70.10
16183.62 70.36
16118.60 70.08
16140.30 70.18
16106.72 70.03
16129.20 70.13
16100.41 70.00
16071.30 69.88
16209.82 70.48
16123.24 70.10