CT22 Static with Anti-Static Hose?

[ScotF]

Hi everyone,

I just picked up a new CT22 today.  Love the vac -- quiet, great suction and the adjustability is awesome.  I currently do not fave a Festool sander.  I hooked it up to my Bosch 6 inch and I keep getting shocked just like I did when using my 8 year Fein and non-AS hose.  Has this happened to anyone else?  Any ideas as to what could cause it and how to fix it?  I did put electrical tape around the fitting from the sander to the hose and that helped a little, but it did not resolve the issue entirely.  Any assistance or ideas would be welcome and very much appreciated.

Thanks!

Scot

 

[jonny round boy]

Scot,

Where is the shock coming from?

Even though the hose & vac are anti-static, if the sander itself isn't then a static charge could still build up on it (especially if the hose-connector on the sander is non-conductive).

If the sander body is metal, then you could try grounding it to the hose with copper tape & see if that makes any difference. If the sander is 100% plastic, then there may be little you can do.

 

[Brice Burrell]

Scot, your problem may well be the outlet isn't grounded. It's not uncommon that new outlets are installed in older homes where there is no ground.

 

[VictorL]

I had the same problem with Bosch sander. Bosch sander's plastic fitting is not conductive, and I assume that electrical tape works like isolator too.
There are two solutions:
1. use self adhesive conductive tape/foil and connect hose with metal part of sander. (so-so solution)
2. Replace Bosch's sander with Festool sander (works best, I opted for this solution)

P.S. Missing ground is not a case. I did have problem with Bosch, but not with Festool's sander.

Regards,
Victor

 

[ScotF]

Thanks for the replies.  I know that the sockets are properly grounded as I installed them myself with my neighbor who is an electrician.  I suspect that it has to do with the adaptor that connects the sander to the hose.  The Bosch's body is metal and the adaptor is plastic and nonconducting.  I have some aluminum tape and will try that to see if it helps.  As much as I would love a new Festool sander I would rather hold off on that for now, especially since my Bosch sander is only a year old (I bought it before my first Festool).

Any other thoughts or suggestions are welcome.  I love this forum -- lots of great advice and I appreciate it!

Scot 

 

[ScotF]

I think I resolved the issue -- using the aluminum ducting tape on the adaptor end where the AS hose connects and also running a couple of thin strips insidethe adaptor so that it also touches the sander body seems to have done the trick.  I sanded another panel this morning going through all the grits and did not get shocked.  Keeping my fingers crossed that this did the trick.

Scot

 

[AlexThePalex]

Scot, your problem may well be the outlet isn't grounded. It's not uncommon that new outlets are installed in older homes where there is no ground.

A lot of sockets in my house aren't grounded. I never get zapped.

 

[busybeaver]

Always keep in mind that electricity follows shortest path to ground, and/or completing a circuit.

By using the tape, you're making the hose an easier path for electricity to travel to  ground than the path through your body.

 

[ScotF]

After a few days with my tape fix, it seems to work well and I have stopped getting zapped.  BTW, Festool confirmed that there is a certain amount of carbon in the rubber that they use in their hoses and in certain plastics which makes them antistatic. 

Scot