Shopsmith Forums

Charlese;
I saw that page but I was looking for info on how much noise can be tolerated on the ground and not have the device trip. The devices contain solid state circuitry and sometimes the devices are susceptible to RF overload and go into conduction. RFI and EMI (electromagnetic interference)
These conditions can be caused from anything form a nearby radio transmitter (Ham gear) light dimmers, touch control lamps etc. The hospital grade devices that are "made in America" compliant might be worth a try. It will eliminate the supply chain that provided us with plywood with razor blades in the plies, dry wall that fell apart, toys with paint that has a very high lead content and a plethora of counterfeit products.
If anyone on this site has a consistent problem with GFI's one thing to try is to tie about three overhand knots in the power cord. This sounds really goofy but the knots form an inductance which looks like a resistance to high frequency pulses and noise. It may just drop the level of the noise to an acceptable level.
I will be out of town for about a week so will be out of touch.
Bill V

[quote="wa2crk"]Charlese]

Add a large flat washer(steel) to those knots!

I still say if Power Pro is putting out enough RFI to cause modern day GFI breakers to trip there is a problem.

Again I ask did SS get UL approval on the Power Pro?

Ed in Tampa wrote:I still say if Power Pro is putting out enough RFI to cause modern day GFI breakers to trip there is a problem.

Again I ask did SS get UL approval on the Power Pro?

I see no UL indications anywhere on the Shopsmith Power Pro. Just calling it as I see it. Anything else would be conjecture, at which this Forum is highly proficient.

You could always ask them if it is UL approved.

jcraigie wrote:You could always ask them if it is UL approved.

Ya Might need to explain it first.

I am inclined to 'conjecture' that since no UL sticker or UR sticker is present that it does not. I bet 'CSA' is not on it either!

Anybody have first hand knowledge re Teknatool lathes?

JPG40504 wrote:Ya Might need to explain it first.

I am inclined to 'conjecture' that since no UL sticker or UR sticker is present that it does not. I bet 'CSA' is not on it either!

Anybody have first hand knowledge re Teknatool lathes?

There is no indication that the Teknatool lathes have UL stickers but the following is on their website.

IMPORTANT: A Surge Protection Device rated to at least 15 amps - for USA and Canada, other countries 10 or 15 amps - must be used to protect the DVR electronics from electrical spikes or surges, similar to those used on most Home PC's. Ground Fault Interrupters (GFI's) or Residual Current Detectors (RCD's) are helpful and are a recommended protection device for any powertool. They can be used in conjunction with a DVR lathe without any problems.

paulmcohen wrote:There is no indication that the Teknatool lathes have UL stickers but the following is on their website.

IMPORTANT: A Surge Protection Device rated to at least 15 amps - for USA and Canada, other countries 10 or 15 amps - must be used to protect the DVR electronics from electrical spikes or surges, similar to those used on most Home PC's. Ground Fault Interrupters (GFI's) or Residual Current Detectors (RCD's) are helpful and are a recommended protection device for any powertool. They can be used in conjunction with a DVR lathe without any problems.

GFI's are just like Mark Vs. They come in several different colors and they do not all work alike. Some are better than others in some applications.

Get the right one and your problems are over.

If you are having difficulties making one work, maybe you need to call an electrician.

paulmcohen wrote:There is no indication that the Teknatool lathes have UL stickers but the following is on their website.

IMPORTANT: A Surge Protection Device rated to at least 15 amps - for USA and Canada, other countries 10 or 15 amps - must be used to protect the DVR electronics from electrical spikes or surges, similar to those used on most Home PC's. Ground Fault Interrupters (GFI's) or Residual Current Detectors (RCD's) are helpful and are a recommended protection device for any powertool. They can be used in conjunction with a DVR lathe without any problems.

I would love it if someone that has Power Pro that is tripping a GFI would also have a Tekatool DVR lathe and could see if it tripped the GFI. I would think that might be telling about where the problem is.

paulmcohen wrote:There is no indication that the Teknatool lathes have UL stickers but the following is on their website.

IMPORTANT: A Surge Protection Device rated to at least 15 amps - for USA and Canada, other countries 10 or 15 amps - must be used to protect the DVR electronics from electrical spikes or surges, similar to those used on most Home PC's. Ground Fault Interrupters (GFI's) or Residual Current Detectors (RCD's) are helpful and are a recommended protection device for any powertool. They can be used in conjunction with a DVR lathe without any problems.

Wonder if the 'author' had ANY experience outside of New Zealand!

IIUC the folks 'over there' have rcd's(gfi) with a trip point 6x the US(i.e 30 ma).