310.4 and the powers that be.

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chris kennedy said:
The price of wire. And fuel. And compression fittings.

The price of wire is ridiculous, fuel is too, and compression fittings are overrated. ;)

As far as your OP, I personally don't see a problem with mixing fittings, but that wasn't as much fun as my first sentence

Roger
 
I don't recall ever seeing anything in the Book that says you can't mix fittings. If it was prohibited I believe it would preclude ever using an Eirikson. Looking forward to seeing the picts.
 
iaov said:
I don't recall ever seeing anything in the Book that says you can't mix fittings.
Not enough in this George?

and shall have the same electrical characteristics.
I'm not a computer guy so I look to you for links. Show me a study that shows the 2 different fittings having the same fault carrying capabilities?
 
chris kennedy said:
I'm not a computer guy so I look to you for links. Show me a study that shows the 2 different fittings having the same fault carrying capabilities?
Show me that they don't....:grin:
 
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Also, it is intended that the three raceways have the same physical characteristics (e.g., three rigid aluminum conduits, three steel IMC conduits, three EMT's, or three nonmetallic conduits), not a mixture.....

From the 05 handbook commentary for 310.4

Screw the fittings. (pun) :)
 
Show me electrically please how 4 pipes on a pipe rack with emt and kindorf and straps every 10 feet have a different electrical characteristic. Hey you make me prove or disprove my theories why dont you step up to the plate and prove or disprove the exact impedance of said pipe racks instead of just saying its not the same I think. Or be quiet with unsubstantiated theories. The customer paid for compression give them compression. Show be a lab experiment or stop whining.
 
quogueelectric said:
.... The customer paid for compression give them compression.....

Um, the customer didn't 'pay for compression fittings'. Now that the project has started, they want them changed.
 
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