6 Best Cable Staples For Non-Metallic Sheathed Cable

Securing non-metallic (NM) sheathed cable is a fundamental task that often dictates the speed and quality of electrical rough-ins. Choosing the wrong fastener can lead to damaged cable jackets, failed inspections, or long-term structural issues behind the drywall. Whether wiring a custom home or performing a panel upgrade, the reliability of the connection remains non-negotiable. This guide identifies the most effective staples and tools used by professionals to ensure code-compliant and secure cable runs.

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Gardner Bender PS-150: Best Overall Plastic Staple

Plastic staples like the Gardner Bender PS-150 are the standard for most interior residential wiring jobs. They provide a reliable grip without the risk of cutting into the cable jacket, which often happens if a metal staple is driven too deep.

Because they are made of high-density polyethylene, they won’t rust or corrode over time. This makes them ideal for environments where humidity might be a slight concern, such as basements or utility rooms.

The insulation properties of plastic also minimize the risk of a short circuit if the outer sheath of the cable somehow gets compromised during installation. For a clean, safe, and code-friendly install, these remain the top choice for standard 12/2 and 14/2 NM cables.

Southwire S1214STPCC: Best All-Around Metal Staple

Metal staples are the traditional choice for durability and high-tensile holding power. The Southwire S1214STPCC is a favorite because it strikes the right balance between hardness and ease of installation.

The twin-nail design ensures that the cable stays exactly where it is positioned without twisting or migrating. These staples are specifically engineered to accommodate common NM wire sizes, preventing the “crush” effect that occurs with generic, oversized metal fasteners.

For commercial projects or areas where local inspectors are particularly strict about cable movement, the metal-to-stud bond provided by these staples is unmatched. They are the workhorse of the industry for a reason.

DeWalt DCN701B Stapler: Best for High-Volume Jobs

The DeWalt DCN701B has fundamentally changed how electrical rough-ins are performed on large residential builds. Relying on a hammer for thousands of staples is not only slow but physically exhausting.

This cordless tool features a unique cable guide that centers the cable under the staple every single time. It effectively eliminates the common issue of misfiring or driving a staple directly through the insulation of a Romex run.

While the upfront cost is significant, the time savings on a multi-family project or a large custom home are massive. It is the tool of choice for contractors who need to move fast while maintaining absolute precision.

Milwaukee M12 2448-20: Most Compact Cordless Stapler

The Milwaukee M12 2448-20 is designed for versatility in tight, restricted spaces. When navigating around HVAC ductwork or crowded joist bays in a renovation, full-size nailers often prove too bulky.

Being part of the M12 battery platform, it remains lightweight and easy to maneuver above the head. It provides enough power to drive staples flush into hard-to-reach corners without requiring the user to swing a hammer in a confined space.

For electricians who frequently switch between new construction and repair work, this stapler offers the perfect middle ground. It balances the need for speed with the necessity of accessing cramped cavities.

Gardner Bender PSS-1575: The Best for Stacking Cables

There are instances where space in a joist bay is limited, requiring multiple cable runs to be secured in one path. The Gardner Bender PSS-1575 is a specialized solution designed to keep cables organized and separated.

These plastic stacking staples allow for the neat layering of NM cable, preventing the mess that often accumulates during a complex residential wiring job. Proper organization prevents heat buildup within the cables, ensuring they operate within their thermal ratings.

Using these is a sign of a professional installation. They make future troubleshooting or additions to the electrical system significantly easier for the next contractor.

GB Electrical MS-150: Best Value Bulk Metal Staples

When the job budget is tight and the scope is vast, buying in bulk is the only way to maintain profitability. The GB Electrical MS-150 is the classic, no-nonsense metal staple that comes in large volumes.

These are essentially the “gold standard” for DIYers and pros who prefer the classic hammer-in method. They are incredibly reliable and possess excellent corrosion resistance for standard wood-frame environments.

While they lack the bells and whistles of a cordless stapler or specialized plastic insulators, they offer a consistent, proven performance. You can stock a massive amount of these for a fraction of the cost of proprietary fasteners.

Metal vs. Plastic Staples: Which Is Right for You?

Metal staples provide superior strength and are better suited for areas where cable vibration or movement might be a concern. However, they carry the risk of over-driving, which can lead to insulation damage and potential arcing.

Plastic staples are the “safer” option, as they are specifically molded to prevent crushing the cable sheath. They are often preferred for standard residential walls where speed and safety are the primary goals.

When selecting between them, consider the material being fastened to. Hardwoods might require the sharp, dual-point penetration of a metal staple, whereas soft pine or engineered joists accommodate plastic staples quite easily.

How to Properly Secure NM Cable Without Damage

The most common mistake during installation is driving the staple until the cable is deformed. The goal is to secure the cable so it cannot be pulled loose, not to clamp it down like a vise.

A good rule of thumb is to allow for a small amount of “wiggle” room. The cable should be held firmly against the stud or joist, but the outer jacket should never show signs of indentation or pinching.

Always ensure the staple is driven perfectly square. A slanted staple often forces the cable to one side, which puts unnecessary lateral pressure on the internal copper conductors.

Understanding NEC Rules for Cable Staple Spacing

National Electrical Code (NEC) requirements are strict regarding cable support. As a rule, NM cable must be secured at intervals not exceeding 4.5 feet.

Additionally, a staple must be placed within 12 inches of a device box or cabinet. This prevents excessive strain on the termination points, which can lead to loose connections or fires over time.

Failure to follow these spacing requirements will almost certainly result in a failed electrical inspection. Always check with local authorities, as some jurisdictions have supplemental codes that are even stricter than the national standard.

Powered Staplers vs. a Hammer: A Pro’s Take

The transition from a hammer to a powered stapler is less about vanity and more about health and efficiency. Repetitive hammering into hard timber is hard on wrists and shoulders, leading to fatigue that eventually degrades the quality of the work.

Powered staplers also guarantee consistent depth, which is the hardest skill to master when working with a manual hammer. By removing the “human error” factor, they ensure that every staple meets the standard for safety and code compliance.

However, a manual hammer will always be necessary for the odd, tight-quarter corner where a battery-operated tool simply cannot fit. Keep a box of quality metal staples nearby, but use the power tool whenever the workspace allows for it.

Investing in the right cable management tools—whether it is a high-end cordless stapler for large builds or a reliable pack of plastic staples for small repairs—is essential for any project. By focusing on proper spacing, preventing cable damage, and respecting the NEC guidelines, the resulting electrical system will be safe, efficient, and built to last. When in doubt, prioritize cable integrity over speed; a little extra care during the rough-in stage prevents significant headaches down the road.