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 Square D double tap
[#2] Posted: Feb 25 2010 - 11:22:54 AM |  |  |
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Good pic, thanks for sharing. Charlie
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Square D double tap
[#5] Posted: Feb 25 2010 - 12:16:17 PM | | |
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Oooh, I know! I know!
Actually, I didn't know. I had to go look it up. Now that I have the answer, I gotta say that is a really dumb place for the designation.
Thank you for the opportunity to learn something.
Tom
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Square D double tap
[#7] Posted: Feb 25 2010 - 4:51:16 PM | | |
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Switching Device. For instance, light fixtures in some commercial properties might not have a switch, just turned off with the breaker.
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Square D double tap
[#9] Posted: Feb 25 2010 - 6:57:26 PM | | |
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Quote: Originally posted by John Dirks JrHere is a picture of print on a Square D breaker. It shows the allowance for two conductors to be attached. Click to View
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Square D double tap
[#10] Posted: Feb 25 2010 - 7:12:07 PM | | |
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Quote: Originally posted by John KogelQuote: Originally posted by John Dirks JrHere is a picture of print on a Square D breaker. It shows the allowance for two conductors to be attached. Click to View
Image Unavailable! Sorry you must be logged in to view images. Click Here For Free Registration 45.88 KBHey John. Another quiz. Can those conductors be different guages? Like a #12 and a #14 on a 15 amp breaker?
Thats another good question that I do not immediately know the answer to. I know you shouldn't have a #14 wire on a 20amp breaker.
Obviously, the printing on the breaker doesn't specify anything about mixing wire sizes. It does say 10-14, but I don't know if that means you can mix sizes.
Give it up John, please.
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John Dirks Jr - Arundel Home Inspection LLC - MD license: 29827
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Square D double tap
[#11] Posted: Feb 26 2010 - 12:40:30 AM | | |
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Both Square D and Cutler hammer allow you to combine different size wires (though there are few situations where you'd want to). You can also combine stranded and solid.
If you're attaching only one wire, both manufacturers will allow you to use either copper or aluminum. However, if you're attaching two wires, they both must be copper.
- Jim Katen, Oregon
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Square D double tap
[#12] Posted: Feb 26 2010 - 06:41:32 AM | | |
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To be clear and if I'm not mistaken. . .
Not all Square D breakers are allowed to be double tapped.
That photo is a Square D Homeline breaker. The QO breakers from Square D do not allow double taps. It's easy tell the two apart (if for some reason the breakers were never id'd) because the Homeline have the metal saddle terminal that easily accepts two wires just like the diagram shows.
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Square D double tap
[#15] Posted: Feb 26 2010 - 4:14:25 PM | | |
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Quote: Originally posted by Jim KatenQuote: Originally posted by randynavarro
To be clear and if I'm not mistaken. . .
Not all Square D breakers are allowed to be double tapped.
That photo is a Square D Homeline breaker. The QO breakers from Square D do not allow double taps. It's easy tell the two apart (if for some reason the breakers were never id'd) because the Homeline have the metal saddle terminal that easily accepts two wires just like the diagram shows.
Both the HOM and the QO breakers in the 1-, 2-, & 3-pole configuration in the 10amp-30amp range have the double saddle and will accept two wires. Just check the catalogue. - Jim Katen, Oregon
Okey doke. I stand corrected. I don't remember, though, that the saddles/terminals look the same. I couldn't find a clear enough picture in the catalog.
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Square D double tap
[#16] Posted: Feb 26 2010 - 4:42:49 PM | | |
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This is a QO breaker lug. I'm 99.99% certian they are exactly the same as the homeline ones.
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Richard Moore
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Square D double tap
[#17] Posted: Feb 26 2010 - 8:53:55 PM | | |
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I think there is a difference. Now I'm splitting hairs 'cuz all the Square D breaks accept two wires anway.
On the QO breaker, all I see is that big fat screw head facing me as I look in the panel - the saddle is tucked underneath and sort of hidden by the plastic.
On the Homeline breaker, the saddle is actually visible from the front of the panel.
I could be wrong again. . . but I don't think so. I need to be right about something every now and then. . .
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Square D double tap
[#19] Posted: Feb 27 2010 - 1:49:05 PM | | |
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Quote: Originally posted by Neal LewisQuote: Originally posted by randynavarro
Now I'm splitting hairs 'cuz all the Square D breaks accept two wires anway.
Well, that part of your response is wrong. For example, Square D QO breakers over 30 amp and tandems aren't made for double taps.
Okay, okay. . . I meant the Square D breakers specifically in this discussion.
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Square D double tap
[#21] Posted: Feb 27 2010 - 3:08:51 PM | | |
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Quote: Originally posted by Terence McCannQuote: Originally posted by Jim Katen
Both Square D and Cutler hammer allow you to combine different size wires (though there are few situations where you'd want to). You can also combine stranded and solid.
If you're attaching only one wire, both manufacturers will allow you to use either copper or aluminum. However, if you're attaching two wires, they both must be copper.
- Jim Katen, Oregon
Jim, if you use two different gauge wires wouldn't it torque more on the larger wire leaving the smaller wire loose?
Look at the photo I posted a little earlier. The Square-D top plate "floats" and is pushed down by the rounded underside of the screw. It will rock a bit side to side to accomodate different sized conductors. That's the Square-D...the Cutler Hammer version (photo below) is different and, IMO, doesn't look as capable as the Square-D.
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Square D double tap
[#22] Posted: Feb 27 2010 - 3:17:14 PM | | |
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Quote: Originally posted by Terence McCannQuote: Originally posted by Jim Katen
Both Square D and Cutler hammer allow you to combine different size wires (though there are few situations where you'd want to). You can also combine stranded and solid.
If you're attaching only one wire, both manufacturers will allow you to use either copper or aluminum. However, if you're attaching two wires, they both must be copper.
- Jim Katen, Oregon
Jim, if you use two different gauge wires wouldn't it torque more on the larger wire leaving the smaller wire loose?
Yes, it will probably apply more pressure on the larger wire, but the pressure plate will rock and apply enough pressure on the smaller wire as well. This is probably one of the reasons why you're supposed to tighten these lugs to 36 in-lbs.
- Jim Katen, Oregon
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Square D double tap
[#24] Posted: Mar 04 2010 - 7:19:16 PM | | |
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Quote: Originally posted by John Dirks JrQuote: Originally posted by John KogelQuote: Originally posted by John Dirks JrHere is a picture of print on a Square D breaker. It shows the allowance for two conductors to be attached. Click to View
Image Unavailable! Sorry you must be logged in to view images. Click Here For Free Registration 45.88 KBHey John. Another quiz. Can those conductors be different guages? Like a #12 and a #14 on a 15 amp breaker? Give it up John, please.  We got an answer.
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Square D double tap
