Oilfield Trunk Slammer
Breaker is bad.
This was what I was taught also.There is no point in offering troubleshooting suggestions to electricians. In the US and CAN, the elevator/escalator industry is independently regulated. US/CAN electricians bring the primary 3Ø to the machine room, install its fusible/lockable disconnect, terminate the line conductors, leave the disconnect in the OFF position, and that's it. Same for cab/car lighting circuits, c/w lockable disconnect.
Sometimes, we will be asked to install an auxiliary switch in the main disconnect for integrated systems, bring a ring-&-tip (or PBX) phone line to the machine room for an emerg phone in the car, dry contacts from the fire panel for elevator main & alternate floor homing, pit lighting/plug, hoistway FA devices, etc.....but we DO NOT troubleshoot faults (downstream from the disconnect), even if the fault is opening the supply fuse/brkr.
+2 for coming back with the resolution!Elevator breaker got replaced with a new one and has been working since. The previous one (used) must have had some 'history' that caused it to fail after a year. New three phase panels are on order to re-do the house panels and get rid of the Stab-lok. Maybe they'll show up in another year or two.
if you grew up using that it would be fine
Here’s a really simple way of getting it done.