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Thread: Sander & Vacuum Slave Switching
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15th September 2010, 11:46 AM #16
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15th September 2010 11:46 AM # ADSGoogle Adsense Advertisement
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15th September 2010, 12:31 PM #17
Good Morning Gerhard
Thank you for such an erudite explanation.
For some time a very good friend, a Dutchman incidentally, has been extolling the virtues of the Festool system and suggesting that I upgrade. Two weeks ago he draggooned me to a Festool demonstration centre and last weekend he loaned me a Festool sander 150/3 and Festool midi vacuum to trial. Very, very impressive, but the cheapest Festool vacuum here is Aus$795 (about Euros575) and the 150/3 is over euros400. I do not wish to invest that amount at this point in time, but I am very impressed.
I note your comments and cautions. My existing "shed system" consists of:
* Hollandia domestic vacuum rated at 1,100 watts made in Rotterdam 25+ years ago.
* No indication of wattage of power take-off, or the powerhead. Internal wiring to take-off socket is same diameter as that to vacuum motor.
* Power cord is retracting type, round two-core, and appears to be approximately 6 amps.
* Rupes 350 watt orbital sander, 20+ years old.
* Master/slave switcher I bought is German made Kemo brand. Accompanying brochure appears to have been written by a lawyer with English as a third language.
* House/shed power circuits are fused at 15amps.
I do not know, but I presume that the vacuum must have a soft-start motor. In any case, vacuum plus sander must be right at safe limit of the power flex, or slightly above, and into the safety zone. Not a good idea for prolonged use.
Perhaps a better & safer method is to take the switcher out of the vacuum, and build a separate switcher powerboard box into which both the vacuum and sander plug. Standard 10 amp flex to that powerboard should be ample for start-up load of both vacuum and sander.
Cheers
Graeme
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15th September 2010, 07:26 PM #18
If you're worried about the flex to the vacuum, just replace it with a ten amp lead (I find it cheaper to buy a ten amp extension cord and chop the socket off!).
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15th September 2010, 10:00 PM #19
Graeme, have sent drawing in email to your netspace address.
Mal
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16th December 2010, 10:01 AM #20Member
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Hi,
I would like to build the JayCar unit into a self contained box with a master and slave outlet, as you describe above. Furthermore, I'd like to be able to switch between the 250W - 1kW/1-2kW/>2kW loads on the JayCar switch (to cater for various tools). Alternatively I could just use seperate outlets for each of the loads.
Also, I gather I wouldn't need a relay to switch my 1400W shopvac, is that correct?
I'm trying to get my head around the wiring. I've included wiring diagrams of what I think would be correct. Am I on the right track?
Any assistance appreciated.
Thanks,
JontyLast edited by JontyG; 16th December 2010 at 11:38 AM. Reason: edit description
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