Power outage protection

Last post 08-21-2009, 12:51 PM by Sadistic1. 9 replies.
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  •  02-26-2009, 11:15 AM 3192

    safetyhawk is not online. Last active: 07-24-2009, 5:01 PM safetyhawk



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  • Power outage protection

    Where does everyone buy their power outage protection (non-restart devices) for things like plug-in table saws, drill presses, bench grinders, etc?  How much are they costing and what other terms can I use to search for these items?  I've had a great deal of difficulty tracking them down.

    Thanks.

  •  03-04-2009, 2:17 PM 3201 in reply to 3192

    SPDSKTR is not online. Last active: Nov 20, 2009, 10:33 AM SPDSKTR



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  • Re: Power outage protection

    Do you mean battery backups or some type of GFCI?

    -Justin


    Eat. Skate. Sleep. Repeat.
  •  03-06-2009, 1:44 PM 3205 in reply to 3201

    safetyhawk is not online. Last active: 07-24-2009, 5:01 PM safetyhawk



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  • Re: Power outage protection

    My understanding is that, under the machine guarding standards, "power outage protection" or "non-restart" devices are required on items like table saws, drill presses, etc, to prevent the machinery from starting back up following a power outage.  Based on my understanding from my OSHA certification these are typically little yellow boxes that are plugged into the wall and then the machine is plugged into the device.  If the power goes out during use, when it is restored, the yellow device must be reset before electricity will run to the machine preventing it from starting unexpectedly.  I found one for $250 which seemd quite steep.  Anyone know of other search terms I could use to find one, or if I'm mis-interpreting the regs?

  •  03-09-2009, 4:36 PM 3206 in reply to 3205

    SPDSKTR is not online. Last active: Nov 20, 2009, 10:33 AM SPDSKTR



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  • Re: Power outage protection

    That would be a ground fault circuit interrupter (GFCI).  You know the plugs at home that have the buttons that say "Test" and "Reset?"  Those are GFCIs.  They also make portable ones, which are the yellow boxes you described.  A circuit breaker at home is also a form of GFCI.  If a circuit is overloaded, it trips the breaker, preventing some really bad outcomes.

    -Justin


    Eat. Skate. Sleep. Repeat.
  •  03-09-2009, 5:02 PM 3207 in reply to 3206

    ctech is not online. Last active: 11-20-2009, 12:57 PM ctech



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  • Re: Power outage protection

    A GFCI is not going to keep a piece of equipment from starting up again after a power outage.  It will trip if the sensor in it senses that the circuit has gone to ground.  Very handy if you have one on an extension cord that has a slit in the insulation and you wade into water with it.  You'll get a jolt for sure, but the GFCI is designed to limit the lenght of time that you receive the jolt, thereby letting you live to fight another day.

  •  03-10-2009, 11:04 AM 3211 in reply to 3207

    safetyhawk is not online. Last active: 07-24-2009, 5:01 PM safetyhawk



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  • Re: Power outage protection

    Here's a link to what I am talking about.

    http://store.flexbar.com/merchant2/merchant.mvc?Screen=PROD_SS&Store_Code=FLX&Product_Code=17025&Category_Code=Belt-Covers

    Anyone out there familiar with this requirement, and how do you comply?

    1910.213(b)(3)

      On applications where injury to the operator might result if motors were to restart after power failures, provision shall be made to prevent machines from automatically restarting upon restoration of power.
  •  03-10-2009, 11:34 AM 3214 in reply to 3207

    SPDSKTR is not online. Last active: Nov 20, 2009, 10:33 AM SPDSKTR



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  • Re: Power outage protection

    ctech:

    A GFCI is not going to keep a piece of equipment from starting up again after a power outage.  It will trip if the sensor in it senses that the circuit has gone to ground.  Very handy if you have one on an extension cord that has a slit in the insulation and you wade into water with it.  You'll get a jolt for sure, but the GFCI is designed to limit the lenght of time that you receive the jolt, thereby letting you live to fight another day.

    Check this out.  "Manual Reset - Must be activated by hand after a power outage or in the event of a ground fault condition."

    Guess they're wrong, although they designed and made the product.

    -Justin


    Eat. Skate. Sleep. Repeat.
  •  03-10-2009, 12:20 PM 3216 in reply to 3214

    safetyhawk is not online. Last active: 07-24-2009, 5:01 PM safetyhawk



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  • Re: Power outage protection

    Thanks for the link.  I wouldn't have expected that a GFCI would offer non-restart protection either, I just thought we were talking about two different things.

    Woodhead is still pretty pricey but thanks to your followup I checked for GFCIs through McMaster and found several in the $40.00 range!

    http://www.mcmaster.com/#about-gfcis/=xy3wh

  •  03-10-2009, 12:43 PM 3217 in reply to 3216

    ctech is not online. Last active: 11-20-2009, 12:57 PM ctech



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  • Re: Power outage protection

    Try this link:

    http://www.grizzly.com/products/Magnetic-Switch-Single-Phase-110V-Only-1-HP/G8290

    Same price range as the GFCI but designed to do what you want.

  •  08-21-2009, 12:51 PM 3462 in reply to 3192

    Sadistic1 is not online. Last active: 09-01-2009, 11:31 AM Sadistic1



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  • Re: Power outage protection

    Here we have a table saw, planer, radial arm saw, and a bench sander. I had an electrician come in and wire the machines into a box with a start/stop button configuration. Anytime there is a power outage, it shuts down. Even if you turn the machine off with the normal off switch, you still have to reset the box.
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