Recent content by u3b3rg33k

this looks fun

if you give it a few turns of wire you can bump it up a scale or two. but yeah i did give up. there's only so much money in the scope instrument bucket, and I'm usually measuring in the 1-30A range.

it's an i400s on my rigol ds1054. there ARE other ground paths - namely the ground, the equipment has a metal chassis. I have not tried reading across resistors. it's been a while since i've bothered trying I switched to a code-legal "solution" - a drive on 220V lol.

a basic X, Y setup with inductors. and a nice giant choke on the cord itself. off-the-shelf tech that's in most power supplies (but notably NOT most VFDs). for this I was measuring off the ground.

grounded B has no 120 or 208. just 240 delta.

i mean i use my Fluke amp clamp on my 1GHz scope. if I run without the GFCI and with a proper ground, i'll see something like 8mA on the ground (so that should trip). if I filter the VFD, I can get it down to a measured 1mA on the ground, but the GFCI still trips. hence my curiosity. I'm...

with a filter, measured with my fluke clamp and scope, it was under 1mA. still tripped. hence my skepticism.

here's what's to get: I WANT TO KNOW IF THE 30mA RCD WILL ALLOW A VFD TO OPERATE. i WANT to be able to run my VFDs on GFCIs. that's it. i'm not grabbing live phase conductors with my bare hands. i'm not advocating doing unsafe things. any other questions?

i see the hyperbole is still at 11. I just wanna know if the higher current units still insta-trip when the output stage stars. I suspect they would. also 240 delta is definitely more spicy than split phase. it's 240V to ground. there's no stinger leg. it's 240-240-240. edit: it's grounded B.

and yet i've been working with legacy 3ø 240 delta for years and have yet to die. not a single GFCI to be seen. let's bring the hyperbole down to like a 6? Honestly I wouldn't be surprised if the higher current rated ones STILL trip, since the 4mA ones trip out even under 4mA which is why I ask.

i mean idk if it'll still insta-trip the moment the output stage starts, too.

FWIW i've got an Eaton 10HP V4 2 stage full package unit at work. very quiet. comes with a 15hp VFD so it can run on 1ø or 3ø. only runs as fast as it needs to run to hold the setpoint you want. 1000hr service interval. I've got a 2 stage filter behind it and a refrigerated dryer.

meanwhile in the UK, you can buy a 30mA GFCI at the hardware store https://www.screwfix.com/p/masterplug-ip66-13a-1-gang-weatherproof-outdoor-unswitched-active-plug-socket-with-rcbo/889RG? idk for sure but if code would let me i'd give it a shot.

I wouldn't shy away from it personally but I love slapping VFDs on things. used VFDs are a thing btw. I'd rather grab a name-brand used unit of the *bay than a no-name brand, every day of the week and twice on sunday. just grab a 10HP rated drive for your 5HP load - that's the rule of thumb if...

I can confirm that trying to get anything warrantied/repaired by eGO *****. your mower has a single blade motor malfunctioning? better trailer it to a dealer. or by the part yourself (it's much more convenient). $400 battery misbehaving days out of warranty? call-center flow chart says it MUST...