I know many electricians and vendors, engineers encounter nuisance tripping with the Leviton GFCI. After all these years. Is there finally a theory why? If not. Let's figure it out and analyze the circuit.
First. This is a Waterpik mouth spray shaded-pole motor. See youtube video how it works at
https://www.youtube.com/watch?v=PmNcRsxSovs
Even if the plug is 2-prong (without any grounding and it's put on glass surface). The Waterpik motor can consistently trip the Fairchild chipset (I tested 4 units and same results). This is used in the Leviton. It doesn't trip on other brands of GFCI such as the Siemens GFCI. It's even when the motor was isolated and not wet (even if rotor removed). The trips occur either during startup or turning off (50% of the time). Not when it's already on.
For other load that trips sometimes, it's difficult to figure it out. But not this when it can do it consistently so we can do experiments that can figure out the technical reasons.
This is the circuit diagram of the GFCI also used by Leviton.
http://datasheet.elcodis.com/pdf2/81/73/817329/rv4141a.pdf
See the Leviton teardown at https://www.powerelectronictips.com/teardown-leviton-ground-fault-circuit-interrupter/
The second sense coil works only if there is a ground, right? So what part do you think is tripping the circuit? There are many theories elsewhere. Some say the inductive load could have the magnetic field still not going to zero in one wire producing temporary imbalance in the sense coil, but why doesn't it trip other brands of GFCIs (such as the Siemens)?
https://www.justanswer.com/electrical/2g0be-gfci-outlet-trips-even-when-clear.html
Why is your theory? Don't suggest wiring problem because it is not that.
This is important for electricians, vendors, engineers and even users to know the reasons so can share the knowledge and avoid headaches and inconvenience.
First. This is a Waterpik mouth spray shaded-pole motor. See youtube video how it works at
https://www.youtube.com/watch?v=PmNcRsxSovs
Even if the plug is 2-prong (without any grounding and it's put on glass surface). The Waterpik motor can consistently trip the Fairchild chipset (I tested 4 units and same results). This is used in the Leviton. It doesn't trip on other brands of GFCI such as the Siemens GFCI. It's even when the motor was isolated and not wet (even if rotor removed). The trips occur either during startup or turning off (50% of the time). Not when it's already on.
For other load that trips sometimes, it's difficult to figure it out. But not this when it can do it consistently so we can do experiments that can figure out the technical reasons.
This is the circuit diagram of the GFCI also used by Leviton.
http://datasheet.elcodis.com/pdf2/81/73/817329/rv4141a.pdf
See the Leviton teardown at https://www.powerelectronictips.com/teardown-leviton-ground-fault-circuit-interrupter/
The second sense coil works only if there is a ground, right? So what part do you think is tripping the circuit? There are many theories elsewhere. Some say the inductive load could have the magnetic field still not going to zero in one wire producing temporary imbalance in the sense coil, but why doesn't it trip other brands of GFCIs (such as the Siemens)?
https://www.justanswer.com/electrical/2g0be-gfci-outlet-trips-even-when-clear.html
Why is your theory? Don't suggest wiring problem because it is not that.
This is important for electricians, vendors, engineers and even users to know the reasons so can share the knowledge and avoid headaches and inconvenience.