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Author Topic: locking out outlets  (Read 1539 times)

Rob Spence

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Re: locking out outlets
« Reply #10 on: June 04, 2019, 05:48:26 pm »

What about the covers for outdoor recepticals?
I know some of them have provisions for a small padlock.
I see them all the time in public parks.
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Paul G. OBrien

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Re: locking out outlets
« Reply #11 on: June 04, 2019, 09:16:42 pm »

We had a near miss this past weekend where someone (not us) backstage tried to pull the plug on a piece of equipment so something else could be plugged in.

To plug in a phone charger maybe? I've seen that twice now, most recent was an unknown person that unplugged a set of powered side fill monitors to charge their i-thingy and the previous was a musician that unplugged his own floor monitor during a break to charge a phone and then of course complained that his monitor didn't work once the next set had begun.
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Erik Jerde

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Re: locking out outlets
« Reply #12 on: June 04, 2019, 09:19:25 pm »

We had some things at church that people would keep unplugging.  We switched the plug and outlet to non standard.  It has solved the problem.

The problem is they don't realize it won't work for them till they unplug it.  Unless you've cut everything over to 100A stage pin..... :)
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Stephen Swaffer

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Re: locking out outlets
« Reply #13 on: June 04, 2019, 10:30:21 pm »

The thing is, though, plug-and-receptacle connectors SHOULD NOT be considered "disconnecting means" if they are not listed for breaking capacity. If they aren't disconnecting means, then securing them from unauthorized disconnection should not be an issue. For a typical 15A plug and receptacle (NEMA 5-15), how do you know if it is rated for 15A breaking capacity?

(Now, I do not know what the Code says about this. Does the Code consider all plug-and-receptacle connections to be disconnecting means? Are all NEMA plugs and receptacles supposed to have breaking capacity at their rated amperage? Judging by the number of burned receptacles and plugs I've seen, I'm guessing "probably not." This is probably why British receptacles have switches.)

Note, however, that Neutrik powerCON TRUE1 connectors ARE designed for breaking capacity, so an astute inspector might not like seeing THEM secured! On the positive side, I haven't seen any coffee urns or vacuum cleaners with a TRUE1 plug.

Code does not require disconnecting means to have breaking capacity.  For several appliances, cord and plug is a valid disconnecting means as long as there is also a way to turn the appliance off.  A disconnect under load may damage things-but I assume that is considered less annoying than burning the building down because something could not be disconnected?  The wisdom can be debated all day long, but code requires disconnecting means for most everything and "cord&plud" is one of the more common means.

I think the outdoor cover is a good idea. Another thing that might work if it is a venue you can get things changed (even the cover requires that) would be a single twistlock receptacle,.  The single would look unusual enough I think most people would leave it be (hopefully when they feel it is stuck they wouldn't just yank on it?)
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Mike Sokol

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Re: locking out outlets
« Reply #14 on: June 05, 2019, 10:25:46 am »

We had some things at church that people would keep unplugging.  We switched the plug and outlet to non standard.  It has solved the problem.

There's a plethora of choices, not all of which are 120-volt.  :o
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Frank DeWitt

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Re: locking out outlets
« Reply #15 on: June 06, 2019, 09:56:49 pm »

we used a L5-15r twistlock duplex I red.  The red twist lock that shows serves as a warning that removing the plug wont give them what they want.
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Craig Hauber

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Re: locking out outlets
« Reply #16 on: June 14, 2019, 10:16:50 am »

There's a plethora of choices, not all of which are 120-volt.  :o
The issue here is unplugging
the average dumdum will still yank those out only to find out after it is out that it isn't usable -but the damage has supposedly been done at that point.

If this is such an issue:

1) police your used outlets better, leave obvious high-traffic ones wide open and run cord to more out-of-the-way hidden ones -such as behind furniture (or bury entire area with your empty cases or set up control round it)

2) distro with large mains connection and all proprietary connections for your systems (Powercon, T-L, stage pin etc..)

3) UPS (yes they come big enough for a giant projector, they may be heavy and not last long, but if you're popping $500 lamps every time I would figure it would pay for itself fast) 

4) Invest in gear that tolerates power failure during use.  -Because grid outages outside of the venue happen too and I wouldn't want gear harmed by sudden power loss of any kind
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Jonathan Johnson

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Re: locking out outlets
« Reply #17 on: June 14, 2019, 12:57:45 pm »

The issue here is unplugging
the average dumdum will still yank those out only to find out after it is out that it isn't usable -but the damage has supposedly been done at that point.


You could always put up a sign
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Re: locking out outlets
« Reply #17 on: June 14, 2019, 12:57:45 pm »


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