Thanks for the response but, how are they treated differently? Do I not have the same length constraint?
Are there other references that you know of that I can review for the rules concerning secondarys that originate for outside locations?
Could anyone tell me where I can find this type of...
Hello,
I am confused about the rules for secondary feeder taps on a transformer.
Basically, I have a 4160/480, Delta/Wye, 2000KVA transformer. I would like to feed 2x480VAC MCC line ups (1x1600amp bus and 1x1200 amp bus).
I was planning on placing the transformer directly outside an existing...
Hello,
I have a question concerning analog input cards and their wiring. Specifically, if inputs are wired as “single-ended” or “differential”.
As I understand it, when using differential mode one is able to avoid potential (one never knows ahead of time) problems associated with external...
I have a question concerning motor nameplate data, specifically power factor. The motor I have does not list the power factor and I would like to calculate the actual HP required for the pump that the motor drives.
I thought I would use the following formula:
FLA = ((HP*746)/(1.73*V*PF*EFF))...
Always remember "ELI" the "ICE"man
E=Voltage
L=inductance
I=Current
I=Current
C=Capacitance
E=Voltage
ELI means voltage leads current in an inductive circuit.
ICE means Current leads Voltage in a capacitive circuit.
When a pure inductance is represented in complex form the imaginary component...
I would like to know why the NC contacts from the overloads on a typical "across the line" starting circuit are always wired to the common side of the contactor coil. Typically, the start and stop contacts are wired to supply power to the coil and the overloads are always wired to interrupt the...
