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Author Topic: quick wiring / opinion question  (Read 2308 times)
belfert
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« Reply #15 on: March 01, 2010, 09:53:59 AM »

The ugly book is much more than a conduit fill table and it was free offer.

Okay, I should have said no need to wait for a book.  I was simply trying to point out that this info is available out there without waiting.

I'm sure the book has other good info too.
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Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
Sam 4106
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« Reply #16 on: March 01, 2010, 10:54:34 AM »

Hi Jack Conrad,
Wires don't have to have two layers of insulation. When using ENT (commonly called smurf tube) or gray plastic conduit it just works out that way. But when using EMT, rigid metal conduit, metal flex conduit, or BX there is only one layer of insulation (on the wires). The purpose of the conduit is for physical protection and support of the wires.
Good luck, Sam MC8
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1976 MCI-8TA with 8V92 DDEC II and Allison HT740
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« Reply #17 on: March 01, 2010, 07:18:39 PM »

Last time I looked, THHN was about the only thing commonly used in EMT jobs; it has a colored insulator and a clear insulator outside that.
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JackConrad
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« Reply #18 on: March 02, 2010, 06:01:37 AM »

Hi Jack Conrad,
Wires don't have to have two layers of insulation. When using ENT (commonly called smurf tube) or gray plastic conduit it just works out that way. But when using EMT, rigid metal conduit, metal flex conduit, or BX there is only one layer of insulation (on the wires). The purpose of the conduit is for physical protection and support of the wires.
Good luck, Sam MC8

Thanks Sam,
   Any day I learn something new is a good day.  Jack
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Growing Older Is Mandatory, Growing Up Is Optional
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