ABB THQ/THHQ Ground Fault Circuit Interrupter Installation Guide

This document provides installation, testing, and troubleshooting instructions for ABB Type THQ/THHQ ground fault circuit interrupters (GFCIs) with self-test features, including models for personnel protection (GFT/GFT2 at 6mA) and equipment protection (GFEP/GFEP2 at 30mA). It covers safety warnings, wiring procedures for 1-pole and 2-pole breakers, LED fault code diagnostics, and monthly test procedures to ensure proper ground fault and arc fault detection.