Flammability Rating - is FT4 a better rating than FT1?

L

larsahl

#1
Hi,

I'm looking for information regarding flammability rating.
I have seen that I shall use VW-1 or FT1 or a better rating for the cables in my product. My question is FT4 a better rating than FT1?

Best,
Lars
 
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Mikishots

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#2
Hi,

I'm looking for information regarding flammability rating.
I have seen that I shall use VW-1 or FT1 or a better rating for the cables in my product. My question is FT4 a better rating than FT1?

Best,
Lars
They're different tests conducted for different configurations. FT4 is for cables in cable trays.

A bit more info?
 
L

larsahl

#3
ok, but I've seen in tables from cable manufacturers that FT4 is a better class then FT1. But it is maybe hard to compare those two classes?
 
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