Your expresso machine must have a metal body else it would not need a
grounded cord. Using a multimeter with the unit unplugged check the
resistance between the black and ground and the white and ground, they
should both be open. Check the resistance between the chassis and ground,
it should be shorted. Thats a basic test and if it failed, I would expect
the GFCI to trip always (except if ground is open in which case it would
never trip).

You say it is only tripping when the motor starts. This implies the motor
is putting current down the green wire while running. Is it possible the
green and white wires are swapped for the motor only.

" I opened the expresso machine, tied all connectors I could find, tried
it again, and it made the GFCI tripped"

What did you do? if you reconnected any wires, you may have created the
second fault at that time while eliminating an original short in the old
cord. Swapping black for white or white for ground could be a cause of
this.

Does the machine also trip regular breakers when the motor starts, if so it
is not a GFCI condition but an overcurrent protection trip


"fredinstl" wrote in message
oups.com...
thanks for your responses.
I installed a new GFCI, and it was still tripping.
I then tried again to plug it into the other plug I tried before, and I

realized it actually wasn't a GFCI (I couldn't see it as it was behind
a 2 - 6 plug adaptor :-( Being in the kitchen, I just assumed it was
GFCI, but it wasn't).
So now I know my espresso machine is at fault.
I opened the expresso machine, tied all connectors I could find, tried
it again, and it made the GFCI tripped.
Next thing I tried: changed the cord. I had one at home, so simple
enough. One thing I wasn't sure about is that it had blue, brown and
yellow-green cables (the espresso is made in Italy), but the cord I had

was the typical black, white and ground.
I connected in: black/brown, white/blue and yellow-green/ground (found
that info on the internet)
When plugged in, it doesnt' trip anymore. However, if I activate the
pump, it trips again.
Any idea before I take it to repair. I probably should do that, but I
bought it used on ebay, not exactly for cheap, and sent it to repair
about 5 months ago (they cleaned everything), so my 10 years old
machine already cost me more than a new one :-(
I would hate to fork another $100 on it...


thanks in advance. Fred

PS: I am reposting, as, for some reason, my msg didn't show up as new.

In my kitchen, my espresso machine is making the GFCI trip. When
plugging something else (such as toaster), it doesn't trip.
Also, plugging the espresso machine to another GFCI in my kitchen, it

doesnt' trip neither.
So is it due to the espresso machine or shall I just change the GFCI
?

thanks.


Fred.