transfomer: why overcurrent protection is not required on the grounded conductors?
- Thread starter dawsez
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LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Because it's controllable, and if it were to open independently, could cause over-voltages.
Dale001289
Senior Member
- Location
- Georgia
Unless you have a shared neutral between phases (not advisable), you should never have current on the neutral once the phase conductor of the circuit has been interrupted, i.e. CB opened/tripped. IEC is different - they use two pole CB's to interrupt both phase (hot) and neutral on single phase branch circuits.
mbrooke
Batteries Included
- Location
- United States
- Occupation
- Technician
What application do you have in mind? Above 600 volts is not uncommon for the neutral to have CTs for measuring current.
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