Conductor Crimped Reducers

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I have not seen anything saying it does; how about when you term with a lug? 500 mcm the lug isn't as big as the cable.
 
That depends on the crimps temperature rating.
After installing a crimp that’s rated for 75C the conductor rating must be rated from the 75C column instead of the 95C column.

some have something like “cu9al” or “cu7al”
The 9 means 90C, the 7 means 75C
 
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Terry Hoff said:
Does a conductors ampacity get reduced if you use the crimped barrel lug to fit under a terminal point?
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I have not run into a case where the any reduced ampacity mattered
Okay - that didn't make any sense

The only time I have needed these is where the conductor was fattened - VD usually.
Example: We are trying to fit a 500 into a lug sized for 250 max, and the ampacity required was okay with 4/0. So, in this case wouldn't matter.

Which is not much help. Give us some context on the application.
 
Terry Hoff said:
Does a conductors ampacity get reduced if you use the crimped barrel lug to fit under a terminal point?
Click to expand...

The crimped on barrel lug does nothing to reduce the ampacity of a conductor.

However, depending on the condition of the crimp, and, the resistance of that crimp ,if any, may cause a rise in the amperage of the circuit.

JAP>
 
jap said:
The crimped on barrel lug does nothing to reduce the ampacity of a conductor.

However, depending on the condition of the crimp, and, the resistance of that crimp ,if any, may cause a rise in the amperage of the circuit.

JAP>
Click to expand...
That is correct, but if the lug is rated for 75C, then the conductor has to be rated at that temp also. It can’t be rated at 90C with a 75C lug.
the wire rating is the rating of the weakest link.

IMO
 
jap said:
However, depending on the condition of the crimp, and, the resistance of that crimp ,if any, may cause a rise in the amperage of the circuit.
Click to expand...
How might a resistance increase current? Heat, yes, but a rise in current?
 
Many of the crimp on reducers are not suitable for use with mechanical terminations. The terminations are typically only suitable for use with Class B and C stranded conductors. Many of the reducers have solid pins making them unsuitable for use with terminations that are only designed for use with Class B or C stranded conductors.
 
don_resqcapt19 said:
Many of the crimp on reducers are not suitable for use with mechanical terminations. The terminations are typically only suitable for use with Class B and C stranded conductors. Many of the reducers have solid pins making them unsuitable for use with terminations that are only designed for use with Class B or C stranded conductors.
Click to expand...
Do you know where those solid pin adaptors would typically be used?
 
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