1. What is a 1-gang outlet box?
A 1-gang outlet box is an electrical enclosure designed to house a single electrical device, such as a standard wall outlet or light switch. It’s the most common box size for residential and light commercial wiring, and it fits within standard wall framing.
2. What materials are 1-gang boxes made from?
1-gang boxes come in a variety of materials, including non-metallic (thermoplastic or fiberglass-reinforced polyester) and metal (steel or aluminum). Allied Moulded specializes in non-metallic outlet boxes that offer superior corrosion resistance, impact strength, and ease of installation.
3. When should I use a non-metallic 1-gang box instead of a metal one?
Use a non-metallic 1-gang outlet box when:
- You’re working in residential or light commercial settings
- The installation is in a non-metallic wiring system (like NM cable/Romex)
- You want to avoid corrosion, especially in moist or coastal environments
- You need a box that’s lightweight, non-conductive, and easy to modify
4. Are Allied Moulded 1-gang boxes code-compliant?
Yes. Allied Moulded’s 1-gang boxes meet or exceed requirements in the National Electrical Code (NEC) and are UL listed for use in residential and commercial construction. They are designed for safe and secure mounting of devices in accordance with electrical code standards.
5. Can I use a 1-gang box for both outlets and switches?
Absolutely. A 1-gang box is compatible with either a standard duplex outlet or a single-pole light switch, as long as the wiring and device fit within the approved cubic inch capacity of the box.
6. What is “box fill capacity,” and why does it matter?
Box fill capacity refers to the maximum volume of wire conductors, devices, and clamps that can safely fit inside the box, measured in cubic inches. Overstuffing a box can lead to overheating and code violations. Always follow NEC guidelines when calculating fill capacity for a safe installation.
7. What mounting options are available for Allied Moulded 1-gang boxes?
Allied Moulded offers 1-gang outlet boxes with various mounting styles, including:
- Nail-on for wood studs
- Screw-on for metal framing
- Old work (remodeling) boxes for retrofit projects
- Adjustable boxes for variable wall thickness
8. Are Allied Moulded 1-gang boxes rated for damp or wet locations?
Yes. Select models of Allied Moulded’s non-metallic 1-gang boxes are NEMA-rated for damp or wet locations, and some include gasketed covers or in-use covers to meet outdoor electrical code requirements.
9. Do I need special tools to install a 1-gang outlet box?
Not at all. Basic tools like a screwdriver, level, wire stripper, and drill (for some mounting types) are usually all you need. Allied Moulded’s boxes are designed for fast, efficient installation, even for DIYers and contractors working on tight timelines.
10. Where can I buy Allied Moulded 1-gang outlet boxes?
Allied Moulded products are available through a wide network of electrical distributors and supply houses across North America. Contact us or use our distributor locator to find a dealer near you.

1 comment
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