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CF ELECTRICAL SERVICE
Master Electrician Lic #191788-E1
Residential Electrical 📍 Waterbury, CT • Completed: 2025-12-01

200A Electrical Service Upgrade & Whole-Home Generator Interlock

Full service capacity expansion from 100A to 200A with new meter enclosure, Eaton CH load center, dual ground rods, whole-house surge protector, and portable generator interlock.

Service Capacity ⚡ 200 Amps
Voltage & Phase 🔌 120/240V 1-Phase
Switchgear / Panel 🛡️ Eaton CH 42-Space Heavy Duty Load Center
Feeder Conductors 📏 4/0 AL Service Entrance (SER) Cable
Permit & Code Status ✅ Permit CT-WBRY-2025-9941 (Passed)

Engineering Scope & Project Overview

Upgraded an older residence in Waterbury from a dangerous, obsolete split-bus fuse box to an NEC-2026 compliant 200-Amp main breaker service. Included utility meter socket replacement and outdoor emergency main disconnect.

200A Electrical Service Upgrade & Whole-Home Generator Interlock

The Field Challenge

Homeowner required additional capacity for an upcoming central heat pump system and portable generator backup without losing power for more than 4 hours during the utility cutover.

The Master Electrician Solution

Pre-built the replacement panel and service entrance cables, coordinated seamless morning Eversource utility disconnect and afternoon inspection reconnection, restoring power in under 3.5 hours.

Bill of Materials & Component Specifications

Commercial and residential installations utilize commercial-grade, UL-listed hardware meeting NEC 2023 specifications:

Component Description Quantity Manufacturer
Eaton CH 200A 42-Circuit Main Breaker Load Center 1 Eaton
200A Ringless Heavy Duty Meter Socket 1 Milbank
Eaton Mechanical Generator Interlock Kit 1 Eaton
50A NEMA 14-50 Exterior Generator Inlet Box 1 Reliance Controls
Type 1 Whole-House Surge Protective Device (SPD) 1 Siemens
"CF Electrical upgraded our entire panel and added new outlets throughout our home. Professional, clean, and reasonably priced. Passed city inspection immediately!"
— Jennifer Martinez, Homeowner

National Electrical Code (NEC 2023) Compliance & Safety Standards

This project was installed by a Connecticut Licensed Master Electrician (License #191788-E1) following Article 215 (Feeders), Article 240 (Overcurrent Protection), Article 250 (Grounding and Bonding), and Article 408 (Switchboards and Panelboards).

Grounding verified: Dual 5/8" x 8ft copper ground rods spaced 6ft + water bond <25 ohms verified. Surge Protective Device (SPD) integrated: Yes, Type 1/2 Whole-System.