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Copper Temp

Copper Temp

Copper Temp

(OP)
Does anyone know what the maximum temperature is for copper bus??

We have some bus here that looks like it could achieve 200 degC during a short circuit.  I am pretty sure the devices hanging off the bus are not good for more than 100 degc.  

However, a co-worker said he remembers some bus off a transformer running at 300 degc? This seems extreme... ya think?

RE: Copper Temp


An oft-quoted ‘emergency’ temperature limit for insulated copper cables is 250°C in short-circuit calculations.  I don’t know the origin of that figure—perhaps it is a judgment call where occasional excursion will not produce significant physical or electrical degradation.   www.kerite.com/catalog/catalogfiles/short_circuit_limit...
  

RE: Copper Temp

Suggestion: It depends on a bus application. Reference: IEEE Std 141-1993 Red Book Chapter 13 Busways

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