⚡ NEC 230.95 Mandatory GFPE (1,000A+ 480V Mains, Max 1,200A Pick-Up / 1.0s Delay)

NEC 230.95 Ground-Fault Protection Calculator

Size Ground-Fault Protection of Equipment (GFPE) relays and current sensors for commercial 480Y/277V service disconnects rated 1,000A or higher under NEC 230.95 & NEC 215.10: calculate ground fault pickup threshold (maximum 1,200A with time delay not exceeding 1.0 second at 3,000A fault current), current sensor ratios, and electrical switchgear margins.

1. Project & Operating Inputs

Main Service Switchboards Protected (Switchboard Count e.g. 4 Mains)

Main Breaker Rating (Amps e.g. 3,000A 480V Main Disconnect)

Customer Bid Price for Supplied & NETA Certified GFPE Testing ($)

GFPE Sensor Coils, Microprocessor Trip Units, Secondary Injection Rig ($)

2. Financial Breakdown & Yield

NEC 230.95 MANDATORY GFPE

Turnkey GFPE Switchgear Testing Profit

Electrical Power Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost