"Stak On"

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henry1971

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Is there anywhere in the code that says you cannot wrap a stranded wire around a ground screw or device screw ?

Thank You
 
henry1971 said:
Is there anywhere in the code that says you cannot wrap a stranded wire around a ground screw or device screw ?

Thank You
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No.

Here is some info from the UL white book.

RECEPTACLES FOR PLUGS AND
ATTACHMENT PLUGS (RTRT)
GENERAL

This category covers general use receptacles for use in wiring systems
recognized by ANSI/NFPA 70, ??National Electrical Code?? (NEC), and outlets
for use in appliances and fixtures. It also covers some attachment
plugs, male inlets, and cord connectors with non-standard slot or blade
configurations which are part of a line of wiring devices including receptacles.
Other similar attachment plug devices are covered under Attachment
Plugs (AXGV).

TERMINALS

Terminals of the wire-binding screw, setscrew, or screw-actuated back
wired clamping types are suitable for use with both solid and stranded
building wires.
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henry1971 said:
Is there anywhere in the code that says you cannot wrap a stranded wire around a ground screw or device screw ?
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No, but there is a "trick" to having the strands make up tight....twist the wires to the RIGHT, then stuck them under the screw as usual.
Another way is to just use a sta-con :D
 
celtic said:
Another way is to just use a sta-con :D
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Thats my method. Sta-Con aren't cheap. I try to avoid stranded at my devices.

Off topic: Are Sta-Cons approved to deliver or clear a fault current?
 
e57 said:
Maybe a terminology issue here - Whats a "Sta-con"?
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You may know them generically as "crimp terminals" of various sorts. Rings, spades, forks, Fast-on's, etc.

I find that jobs that utilize stranded wire also use backwired devices, which largely makes wrapping stranded conductors around a screw terminal unnecessary.
 
mdshunk said:
I find that jobs that utilize stranded wire also use backwired devices, which largely makes wrapping stranded conductors around a screw terminal unnecessary.
Click to expand...

Spec grade devices with pressure plate terminals are no problem.
 
celtic said:
No, but there is a "trick" to having the strands make up tight....twist the wires to the RIGHT, then stuck them under the screw as usual.
Another way is to just use a sta-con :D
Click to expand...


I thought that we do the opposite of "normal twisting" and twist the strands to the left?


Here's an original stakon:

sk_1_g_vinylinslockingforkexpins_0_ph.jpg
 
infinity said:
I thought that we do the opposite of "normal twisting" and twist the strands to the left?
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If that isn't what I said ~ it's what I meant ...

I just spent the better part of today installing outlets way up in the ceiling with all stranded wires ...I kept telling myself "Summer is only temporary, Autumn will be here soon" :smile:
 
celtic said:
I just spent the better part of today installing outlets way up in the ceiling with all stranded wires ...I kept telling myself "Summer is only temporary, Autumn will be here soon" :smile:
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I'm sorry it was so hot in NJ today.:roll:
 
chris kennedy said:
I'm sorry it was so hot in NJ today.:roll:
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Actually, it wasn't that bad outside(80 ish) ...but 20' up, in a ceiling, surrounded by all sorts of theater lighting ~ well, that changes things slightly :grin:
 
celtic said:
Actually, it wasn't that bad outside(80 ish) ...but 20' up, in a ceiling, surrounded by all sorts of theater lighting ~ well, that changes things slightly :grin:
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Hey, it appears I'm flying Pierre down for an inspection. Why don't I fly you in also so we can all stand in the hot a_ _ electric room and sweat all over his red tags?:grin:
 
chris kennedy said:
Hey, it appears I'm flying Pierre down for an inspection. Why don't I fly you in also so we can all stand in the hot a_ _ electric room and sweat all over his red tags?:grin:
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Sounds great ...see if the tickets can be for a red-eye flight ~ maybe we can get some cool aerial photos of lighting storms :smile:
 
mdshunk said:
You may know them generically as "crimp terminals" of various sorts. Rings, spades, forks, Fast-on's, etc.

I find that jobs that utilize stranded wire also use backwired devices, which largely makes wrapping stranded conductors around a screw terminal unnecessary.
Click to expand...
Ah, I see.... Hate 'em, rarely use 'em...

But to be clear, not all "back-wired" devices are rated for stranded. Stab-in devices could also be called back-wired, but are only rated 14 solid for the time being....
 
e57 said:
But to be clear, not all "back-wired" devices are rated for stranded. Stab-in devices could also be called back-wired, but are only rated 14 solid for the time being....
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Spec grade are.( not cheap)
My question is if you have a #10 stranded EGC to a HWH do you wrap the factory GND screw? No you use a sta-con. Is this listed to clear a fault?
 
I haven't seen much difference whether the wire is twisted to the right or the left.
The usual method is to leave a bit of insulation on the tip of the wire. This helps hold those unruly strands together. [The usual method is to strip ~3/4" and then, using the strippers, cut the insulation about 1/2" further on and carefully move that second piece to the end of the wire.]

However, I have discovered that using a small #10 flat washer helps to eliminate the squashing problem.
Note: Target requires all stranded wire and then supplies receptacles specifically designed for solid wire.
~Peter
 
peter said:
I haven't seen much difference whether the wire is twisted to the right or the left.
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Try it in a motor with little to no room and you WILL see a difference ~ as soon as you power up! :D
 
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