Ground Fault Relay Part Number Selection - Commercial Kitchens
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Ground Fault Relay Part Number Selection Guide
Note(s)
1. Ground fault relay recommendations based on mating with a shunt-trip breaker only
2. Wire type: CU | THHN
3. Corrected conductor amperage capacity @ +40°C ambient temperature and as required correction factor for more than 3 conductors in raceway,
reference NEC Tables: 310.15(B)(1), 310.15(C)(1) & 310.16
4. Reference How to Calculate Wire Bundle Diameter Application Note
5. Configurations: Live Wire & Neutral plus Ground (2+1). 3-wire Delta plus Ground (3+1). 4-wire Wye plus Ground (4+1).
AC Ground Fault Relay Relevant Features and Options
A properly configured NK Technologies AC ground fault relay will trip in the range of 4 mA to 6 mA and trips within an established period-of-time, meeting the intent of the 2020 & 2023 National Electric Code.
Standard features:
• Manual ground fault push-to test.
• Two visual indicators: power status and ground fault trip status.
• Normally Open/Normally Closed mechanical relay outputs.
User selectable output options (available choices vary by model):
• Normally energized or normally de-energized contacts.
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Shunt Trip Breaker Options
A Shunt Trip Breaker is required along with a NK Technologies AGU or AGL Ground Fault Relay to complete a 5mA Ground Fault Interrupter Solution. NK Technologies does not sell Shunt Trip Breakers. To make it easier for you to complete your solution, see the table below showing the correct part number for many of the leading Shunt Trip Breaker manufacturers.
If you need technical assistance contact us.
Here is what Engineers have to say about our technical expertise...
“Changes to NEC 210.8 B-F have challenged all of us in the industry to find new GFCI solutions. When NK Technologies reached out to us recently, we decided to invest a few hours into meeting with their application experts. Five of our electrical engineering designers attended the session and considered it time well spent. NK Technologies has an in-depth understanding of the new NEC requirements and ground fault products designed to meet them. We are thankful for their time.”
PK Electrical
One of the top electrical and low voltage/communications design firms,
in both the private and public sectors, based in Reno, NV and Denver, CO.