SMA CORE1 90C TERMINALS

[310 BLAZE IT]

You heard it here first... It's clearly written in their installation manual (I got an early copy) This is a huge deal if it means we can use this column. I know this has been covered a million times but I've never seen a product actually listed for 90C until now

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[310 BLAZE IT]

I know breakers aren't allowed to be 90C at 100A Per NEC But just seeing what people's thoughts are.

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[oldsparky52]

I know breakers aren't allowed to be 90C at 100A Per NEC But just seeing what people's thoughts are.

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I thought the NEC said it was OK above 75C as long as it was listed and identified as such.

 

[kwired]

I know breakers aren't allowed to be 90C at 100A Per NEC But just seeing what people's thoughts are.

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I don't think NEC prohibits 90C rating, it is just rare to find it, especially on a typical thermal-mag breaker.

Whatever equipment you have there may have 90C terminals, but if you run a 90C conductor directly to a circuit breaker, that breaker likely has 75C terminations - so you still need to connect conductors sized per 75C ampacity columns to the breaker. You could change conductor size before landing on your equipment though, with a 90C splicing method.

 

[ron]

The AC Conductors are permissible at 90 deg in the device you have, but you still will size the ampacity to 60 or 75 deg based on its size (<>100A) and cable type.

The wires in many fixtures indicate 90 deg wires required, but the ampacity would still be 60 or 75 deg.