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Old 05-24-2017, 09:34 PM   #1
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Default Question about parallel groove clamps

Can an aluminum alloy parallel groove clamp be used to splice stranded copper to copper wire feeders to an emergency panel or are they only for aluminum to copper splices? If not what would be the reasoning behind that? Thank you for your time
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Old 05-24-2017, 09:37 PM   #2
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Old 05-24-2017, 10:21 PM   #3
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Your profile says apprentice. Why do ask? They need to be listed for what you're using them for.
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Old 05-25-2017, 07:40 AM   #4
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Look up the manuf's data sheet and see what it says. That's what an inspector is going to do if it comes into question. Make sure it's listed and that you use it in harmony with the manuf's instruction sheet and you're good to go. That's how it works with pretty much everything.
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Old 05-25-2017, 07:49 AM   #5
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Check the spec. It will tell you what wire materials are acceptable.

Seems to me, if it can splice an aluminum to a copper, it would be fine to splice a copper to another copper.
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Old 05-25-2017, 07:55 AM   #6
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Quote:
Originally Posted by RePhase277 View Post
Seems to me, if it can splice an aluminum to a copper, it would be fine to splice a copper to another copper.
That's what I'd have guessed too, but check this out ...

http://www.hubbellpowersystems.com/c...oove-aluminum/

... apparently, you have to be careful what goes to what in these, so it's another thing I wouldn't try and guess about.
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Old 05-25-2017, 08:37 AM   #7
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Quote:
Originally Posted by Volt32 View Post
Can an aluminum alloy parallel groove clamp be used to splice stranded copper to copper wire feeders to an emergency panel or are they only for aluminum to copper splices? If not what would be the reasoning behind that? Thank you for your time

Are you refering to the compression groove clamp what the ulities been using or split bolts ?

The main thing is the compression or split bolt is that you have to check that manufacter listing to show what it approved like alum to alum or alum to copper or copper to copper so it make a big differnce there.

As far for emergency panels there are some rules it will be in effect so there is few editions of 700's so get someone experinced on this to help you on this one.
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Old 05-25-2017, 10:20 AM   #8
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If the connector is good for aluminum and copper somewhere on the connector it should say AL/CU. if it is good for AL/Cu it is good for CU/CU
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Old 05-25-2017, 01:24 PM   #9
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Parallel groove clamp?
Sounds like its to hold up conduit, not to connect wires.
This is what I imagine he means?
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Old 05-25-2017, 01:38 PM   #10
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No this is what he's probably talking about.
It's more of a utility connector, not as common in inside work.



If it's not marked then you'll need a spec sheet to know for sure.
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Old 05-25-2017, 02:21 PM   #11
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The only thing we have used close to those is the Burndy 􀀼YGHC-C Hypress and this was used for grounding.􀀪But they are Cu only.􀀫􀀦􀀐􀀦
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