Does This Electrical Device Bother Anyone Besides Me?

Apr 19, 2022 Last reply: 4 years ago 24 Replies

SnapPower sells receptacle covers that transfer power from the receptacle's screws to a nightlight, a USB charge port, etc. The connection to the receptacle's screws is nothing more than a slip-on pressure connection using 2 plastic backed metal tabs.



See the last image here:



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Something about this just bothers me. It reminds me of the old back-stab receptacles that were well known for the failure of the spring tab that held the wires. IMO, the initial connection on those receptacles was more secure than the slip-on connection of these covers and yet they eventually failed. At least the tab on the back-stabs dug into the wire a little bit.



I can imagine the tabs on these covers weakening over time and causing heat and maybe even arcing. Any heat would weaken the plastic behind the tabs, further weakening the connection.



What do you folks think?


I've heard folks complain about back-stab electrical device failures- but I've never had one. And I don't really understand why some consider them failure-prone.

You stick the wire in, you install the switch/receptacle, etc., in the box, and then never touch it again.

I can see a potential problem if you pull the wire out and then stick it back in, maybe even more than once. But stick it and leave it alone-- what's to fail?

This guy opens one up for a closer look :

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John T.

I think that since the current involved is just for an LED or USB, that it's incapable of generating any significant heat, unless the electronics shorts out and even that is probably only going to generate a little arc that probably can't do anything. But is this thing UL listed? It doesn't say. And I would never think of coming up with something like this because I would think there would be problems getting it listed. Is it legal to sell without UL? Like code requires some kind of secure connection for just about anything.

This seems better and worse than the backstab idea. Better because very little current is involved, versus 15/20A. Worse because those fingers would have less tension, maybe more prone to oxidation, already oxidized because the receptacle is 30 years old, etc.

Any discussion related to back-stab devices should always start with ensuring that we are talking about the spring-tab type, not the newer clamp type where the wire stills gets "stabbed" into the back of the device but then gets clamped down by tightening the clamping plate with a screw. There is often confusion between those two types.

Regarding the spring-tab type, 2 issues come quickly to mind:

1 - When you initially stab the wire in it bends the tab towards the front of the receptacle. Tension holds the tab against the wire making minimal connection compared to a screw or clamp plate. Then you push the receptacle into the box which can often put forward pressure on the wires themselves, loosening the connection with the tab. You can't see it/feel it/ever know that it happened. Now you are starting with a loose connection that can heat up over time and get even looser.

2 - The cyclic heating and cooling of the connection based on the load can cause the connection to loosen. This may never happen with a basic lamp or small kitchen appliance, but more likely to happen with space heaters, etc.

In addition, most back-stab devices are at the low end of the quality scale to begin with, meaning that, in general, they are more prone to failure even if the spring-tab connection isn't the problem.

Then there's this, which compares older style back-stabs to newer style back-stabs. I have not verified the comments, mainly because I simply do not use back stab devices. I've seen enough failures, both intermittent connections and burnt receptacles, that I see no reason to take a chance. I've got a screw driver in my hand anyway, so why not use it to ensure a solid connection around a screw or behind a clamp plate?

From:

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"Are you aware that the "Back Stab" receptacles are now only listed for #14 American Wire Gauge? The side mounted terminal screws, if provided, are listed for #12 AWG as well as #14. Initially the spring terminals were listed for both gauges. Since they had to be made with a hole large enough for the larger gauge, but were mostly used for #14 wire, they allowed #14 to move too much as it expanded and contracted from the regular cycling of various loads going on and off. The presently manufactured spring terminal receptacles will not pass the listing standard if the holes into the terminal are large enough to except #12 wire. The smaller hole forces the #14 conductors to remain in position under the contact spring. There is no longer any room for them to shift out of full contact. The spring configuration has also been altered to provide more contact area with the conductor. No conductor movement and a larger contact area equals adequate real world performance. The new ones are much better than the old dual gauge type but the truth is that until they have provided 20+ years of service without a significant number of failures I won't trust them so I won't use them."

Lee Valley had some similar and I have a couple for two years now. Work perfectly, easy to install. Only difference, at the time they were only $7 on a special buy.

They pull maybe 1/100 amp when on so little heat generated.

That's a great comparison between 3 similar devices, but no discussion of my primary "concern": The contact points.

Call me overly cautious, but if it's electrical, I think it should be securely connected. Yes, it's a low amperage draw, but I still don't like the connection method.

According to comments I found on the SnapPower web site, this product is not UL approved. Rather, it is claimed to be ETL certified under certain UL code citations. Interesting, because all other SnapPower products are apparently UL approved. The LED draws so little current that I'm surprised that no one has been able to come up with a design for this type of item that draws the needed power via induction, similar to "cordless charging" for certain types of cell phones and other modern electronics.

Lower voltage, but a couple of billion flashlights work the same way.

It's not great, and it's a nifty idea, but $50 a piece is too much** I'd rather just use those spherical 7watt bulbs. I'm sure I still have one or two. Or stumble around in the dark. **Oh, it's a 2-pack. I only need one, if that.

The amazon ad says nothing about USB port.

Edited for clarity:

Call me overly cautious, but if it's 120VAC, I think it should be securely connected.

But I did.

"SnapPower sells receptacle covers that transfer power from the receptacle's screws to a nightlight, a USB charge port, etc."

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Other brands are sold at Lowes and Home Depot in Canada 6 for $ 60. $ 13. each Canuck-Bucks but availability is sketchy. As usual - Amazon pricing is all-over-the-map. John T.

MM must be really nervous about those ! :-) Mine is 1350 watts and full of water too ! John T.

On Tuesday, April 19, 2022 at 2:47:42 PM UTC-4, some gutless f****it desperately cowering behind Rod Speed spewed the s*it that always pours from the back of it.

On Tuesday, April 19, 2022 at 2:56:06 PM UTC-4, some gutless f****it desperately cowering behind Rod Speed spewed the s*it that always pours from the back of it.

Seriously? Stooping to agreeing with that f****it?

It's a totally irrelevant comment.

There is no connection between the carafe and the source of the electricity.

That's how my kitchen kettle works - with only the vagaries of gravity to assure the integrity of the contacts .. :-) John T.

On Tuesday, April 19, 2022 at 6:43:02 PM UTC-4, some gutless f****it desperately cowering behind Rod Speed spewed the s*it that always pours from the back of it.

I bought some of those "night light" outlet covers - and they are S**TE!!!!

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