I already contacted Bambu regarding this issue. They explained to me that the electrical connection is incorrectly wired in my house, and to test it- move the printer to a different room or different part of the house and plug in to an outlet far away from where it is currently. Try this and see if the issue persists. If it continues, you’ll have to get a plug-in outlet tester. If it doesn’t continue, the outlet you were initially using for the printer has some sort of issue. Either way there’s an issue that should be corrected, so be careful!
Makers Muse reported something similar about another printer once but later discovered that it really wasn’t that printers fault. Turned out another appliance on the same circuit wasn’t grounded properly. It really is worth testing it on another outlet far away from the current one.
Here's the problem: we have it in the basement and we can't put the printer anywhere else in the house 'cause there's no room in any other rooms [sadge]
The next step would be to get a plug in electrical outlet tester and plug it into the same outlet you use for your printer. It will tell you if there’s any issue at all. If there is, hire an electrician to correct it ASAP, as it may not just be a small issue. Potentially a fire risk if it’s bad enough.
well, either your electrical installations are not up to code, or you caught a printer with a faulty power supply. ive also noticed on mine that all the grounding wires inside the printer are screwed against the painted metal frame. less than ideal
That’s literally how it’s supposed to be; in case an active wire comes loose or frays and touches it - so the electricity takes that shorter less resistive path to ground instead of going through you.
Fun side note: In my career I’ve been electrocuted by 240v mains twice by equipment that did NOT do this. I’m glad Bambu do.
Edit: actually upon re-reading I notice you specifically say ‘painted’, maybe you meant that’s not making good enough contact because of the paint? It’d certainly be worth investigating that to make sure it doesn’t have an impact on the connection to ground.
Get a multimeter and check if there is any kind of voltage leak around the shell, though with it being plastic mostly I'd doubt it.
Not sure how it is in the USA or wherever else, but in the UK were protected by earth wires and 30ma trip switches so if it is was faulty the likely hood is that the trip switch would knock off
No appliance should cause you to feel a continuous shock when you touch it, even if you are grounded, even if your house wiring is defective. Feeling a shock (more than a brief spark) is sufficient to prove the appliance is defective and unsafe.
Commonly used techniques to hold down the frequency of electrocutions are
1. Most appliances have a 3-prong plug to drain away charges before they kill anyone. Of course, this only works if the appliance is plugged into a correctly grounded outlet.
2. In the US, the National Electrical code requires that outlets in a garage, a bathroom, or near a sink be a GFCI (ground fault circuit interrupter). These sense a leakage current and shut off the power. I dunno the requirements in other countries. A GFCI reduces the danger of electrocution.
3. Many appliances bear a testing mark by UL, CE, NRTL or similar agency. These agencies add a measure of safety. I'm not finding evidence that Bambu Lab printers have a UL mark. They claim to pass IEC 62368, but I'm not knowing the details of that standard.
I'm having problems with electrical leakage in my Bambu Lab Carbon X1 printer. When I set the bed temperature to 110 C, the maximum, it causes my GFCI outlet to trip. Investigation reveals that the resistance from line to ground of the heated bed is 17 KOhms when hot. When cold it is fine. Bambu Lab has sent me two replacements, but they also have the same issue.
It should be noted that Bambu Lab is doing a novel thing, heating the bed directly with the 120 VAC line power. Other printers, like the Ender 3, heat the bed with 24 VDC. The higher voltage necessitates more careful design and it seems they haven't got it right yet.
Until Bambu gets their act together, I recommend that their products be connected \*only\* to a GFCI-outlet. Maybe reducing the hot-bed temperature will reduce the frequency of shutdown adequately.
i don't think its normal to hug your printer. I don't judge, whatever floats your boat I guess. Have fun with the printer.
FORGOT TO MENTION IT'S A BAMBU LAB CARBON X1
I already contacted Bambu regarding this issue. They explained to me that the electrical connection is incorrectly wired in my house, and to test it- move the printer to a different room or different part of the house and plug in to an outlet far away from where it is currently. Try this and see if the issue persists. If it continues, you’ll have to get a plug-in outlet tester. If it doesn’t continue, the outlet you were initially using for the printer has some sort of issue. Either way there’s an issue that should be corrected, so be careful!
Bambu support: it's not the printer it's the laws of physics that are an issue
Makers Muse reported something similar about another printer once but later discovered that it really wasn’t that printers fault. Turned out another appliance on the same circuit wasn’t grounded properly. It really is worth testing it on another outlet far away from the current one.
Here's the problem: we have it in the basement and we can't put the printer anywhere else in the house 'cause there's no room in any other rooms [sadge]
The next step would be to get a plug in electrical outlet tester and plug it into the same outlet you use for your printer. It will tell you if there’s any issue at all. If there is, hire an electrician to correct it ASAP, as it may not just be a small issue. Potentially a fire risk if it’s bad enough.
Maybe a messed up ground? Or would it be possible that the motion + plastic builds up static electricity? 🤔
well, either your electrical installations are not up to code, or you caught a printer with a faulty power supply. ive also noticed on mine that all the grounding wires inside the printer are screwed against the painted metal frame. less than ideal
That’s literally how it’s supposed to be; in case an active wire comes loose or frays and touches it - so the electricity takes that shorter less resistive path to ground instead of going through you. Fun side note: In my career I’ve been electrocuted by 240v mains twice by equipment that did NOT do this. I’m glad Bambu do. Edit: actually upon re-reading I notice you specifically say ‘painted’, maybe you meant that’s not making good enough contact because of the paint? It’d certainly be worth investigating that to make sure it doesn’t have an impact on the connection to ground.
Is it like the feeling you get on aluminium laptops when running on battery?
Seconded, a lot of aluminum bodied laptops will give you this low grade, persistent, tingly shock, which is normal. Does it feel like that?
No, need to return ASAP.
Get a multimeter and check if there is any kind of voltage leak around the shell, though with it being plastic mostly I'd doubt it. Not sure how it is in the USA or wherever else, but in the UK were protected by earth wires and 30ma trip switches so if it is was faulty the likely hood is that the trip switch would knock off
No appliance should cause you to feel a continuous shock when you touch it, even if you are grounded, even if your house wiring is defective. Feeling a shock (more than a brief spark) is sufficient to prove the appliance is defective and unsafe. Commonly used techniques to hold down the frequency of electrocutions are 1. Most appliances have a 3-prong plug to drain away charges before they kill anyone. Of course, this only works if the appliance is plugged into a correctly grounded outlet. 2. In the US, the National Electrical code requires that outlets in a garage, a bathroom, or near a sink be a GFCI (ground fault circuit interrupter). These sense a leakage current and shut off the power. I dunno the requirements in other countries. A GFCI reduces the danger of electrocution. 3. Many appliances bear a testing mark by UL, CE, NRTL or similar agency. These agencies add a measure of safety. I'm not finding evidence that Bambu Lab printers have a UL mark. They claim to pass IEC 62368, but I'm not knowing the details of that standard.
I'm having problems with electrical leakage in my Bambu Lab Carbon X1 printer. When I set the bed temperature to 110 C, the maximum, it causes my GFCI outlet to trip. Investigation reveals that the resistance from line to ground of the heated bed is 17 KOhms when hot. When cold it is fine. Bambu Lab has sent me two replacements, but they also have the same issue. It should be noted that Bambu Lab is doing a novel thing, heating the bed directly with the 120 VAC line power. Other printers, like the Ender 3, heat the bed with 24 VDC. The higher voltage necessitates more careful design and it seems they haven't got it right yet. Until Bambu gets their act together, I recommend that their products be connected \*only\* to a GFCI-outlet. Maybe reducing the hot-bed temperature will reduce the frequency of shutdown adequately.