Copperclad
Member
- Location
- Merritt Island, FL USA
Hi all,
Im no engineer, just an electrician in need of assistance.
Im confused on how to size a step down transformer proper.
eg.. We have 480 volt 3ph. available for primary voltage, and would like to step it down to power misc. 240 volt 1ph equip.
Our exist. primary conductors consist of (3) #4cu. and (1)#8 cu.
My question is: Do I use the primary voltage or the secondary voltage to calculate the maximum kva transformer using the existing #4 conductors present.
We are looking to install the largest transformer possible, and still utilize exist. wires....thanks for ya'lls help
Im no engineer, just an electrician in need of assistance.
Im confused on how to size a step down transformer proper.
eg.. We have 480 volt 3ph. available for primary voltage, and would like to step it down to power misc. 240 volt 1ph equip.
Our exist. primary conductors consist of (3) #4cu. and (1)#8 cu.
My question is: Do I use the primary voltage or the secondary voltage to calculate the maximum kva transformer using the existing #4 conductors present.
We are looking to install the largest transformer possible, and still utilize exist. wires....thanks for ya'lls help