Offsite and modular construction are growing. Electrical code compliance is a core safety issue, not just an inspection step.
HUD updated its manufactured housing requirements to align with the 2014 National Electrical Code, replacing references to the 2008 code.
The most significant change is expanded Arc Fault Circuit Interrupter, or AFCI, protection.
AFCIs detect dangerous electrical arcing that standard breakers may not find. They can identify low-level faults inside walls before a fire develops.
The 2014 code requires AFCI protection in most living areas, including bedrooms, kitchens, laundry rooms, hallways, and living spaces.
| Type | What it detects | What it protects against |
|---|---|---|
| AFCI | Electrical arcing | Electrical fires |
| GFCI | Ground faults | Electrical shock and electrocution |
AFCIs protect wiring systems over time. GFCIs respond almost instantly to dangerous current leakage.
Surge protection became part of the National Electrical Code in 2020 and expanded further in the 2023 code cycle.
It helps protect expensive electronics and appliances from power surges.
Factory-controlled installation environments make it easier to standardize processes, improve quality control, and verify code compliance before modules arrive onsite.
Mixed-use projects, including five-over-one developments, can involve both commercial and residential requirements. Early collaboration among manufacturers, engineers, distributors, and code experts matters.
Energy codes are also changing building design and operation. Branch circuit monitoring, energy management systems, and intelligent load centers are becoming more common.
Wesco’s Manufactured Structures division serves modular construction, offsite construction, and assembled building industries.
It has more than four decades of category expertise. It supports OEMs across residential, commercial, specialty vehicle, modular, and prefabricated building markets.
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An AFCI protects against electrical fires caused by dangerous arcing. A GFCI protects people from electrical shock and electrocution.
It helps prevent damage to expensive electronics and appliances by redirecting excess voltage from power surges.
Factory-controlled environments allow manufacturers to standardize installations, improve quality control, and verify electrical systems meet code requirements before modules arrive onsite.