A19-SOL-Attachment 2-Drawings and Photos.pdf

This document is a technical specification and installation guide for gallery motor wiring and conduit modifications at the MSHA ASCC HESD (Mine Safety and Health Administration, Accident and Safety Control Center, Hazardous Equipment and Safety Division) facility.

The project involves modifying the above-ground motor wiring system for a gallery motor, including installation of new 500 MCM wire from the motor power source to the motor and through existing overhead conduit. The work requires new #12 wiring bundles from junction boxes, existing #12 bundle terminations, and new 4" ridged conduit installations both outdoors (high-mounted from wall penetration to motor, high-mounted on westwall) and indoors (gallery control room). Key components include a new motor system with wiring installed, junction boxes with wall penetrations, a console junction for #12 wiring connections, existing wirings from motor to gallery console, weather-proof wire tray connections, and a stud rack for conduit support between wall and motor conduit support. Motor specifications indicate a Reliance Electric Co. motor (IDH U323899 T1-JV) with 500 horsepower frame, 460-volt three-phase, 60 Hz, 1150 RPM operation, Class F insulation, continuous duty rating, 5.5A field amperage, and 2.5A field amperage maximum. The documentation includes detailed technical drawings (Drawing No. 001 and 002), wiring schematics with color-coded conduit routing, and four supporting photographs showing the motor power disconnect, gallery control room, outdoor to motor conduit routing, and junction/terminal installation details.