Hi. It's nothing weird, you have a power leak somewhere. As you put it, it is clear that the power failure is not. You may change it and the new one has less or more sensitivity and the shooting box changes, just for that reason, but the leak will persist.
I sincerely pity you, to see how you manage to charge even if it is part of what you are going to deny.
I hope you have even a minimum experience in finding ground faults, otherwise do not touch anything and be honest with your client.
One tip, leave the installation in single-phase power before starting the search
Something like this happened to me and after a few days I discovered that the phase 2 neutral was shared in a certain sector. Imagine how I went crazy, pay attention to every detail
If I had to sectorize wiring again with new conductors and perform the circuit again there is no other in cadi all cases since the leak may be inside the pipe, explain that to the client and the amount of that work
If you already look everywhere ... there is moisture and some sides. but I already disassemble all the racks and lights, there never jumps and there light that garments and any side makes you break the circuit breaker ... tomorrow I'm going to try another circuit breaker to see what happens ... it's weird what makes me thank you
Random failures are the most difficult to solve. Have patience
good luck greetings
Hi, I got a four-pole circuit breaker and I installed it and I didn't jump any more ... The old circuit breaker is short, tomorrow I put a new one ...
hello first when I replace the circuit breaker I stop jumping ... when placing a healthy one I do not cut the current anymore and second after a week I reinstalled the old and original circuit breaker and I jumped again, replace it with a new one and problem solved .... so far