Transformer Disconnect

[adavey]

Hi All,

Situation, a 75KVA transformer has primary protection and also requires secondary overcurrent protection. What's the maximum distance I can install the "secondary" overcurrent protection (fused disconnect). Can't seem ti find it in the NEC. Please help

 

[raider1]

The secondary conductor protection must be installed in accordance with one of the conditions listed in 240.21(C). The disconnect will most likely need to be installed either within 10' or 25' of total conductor length, depending on which of the conditions in 240.21(C).

Chris