Electrical Fasteners and Clamps
Codes require that all exposed cable be tightly stapled to the wall, ceiling, or a framing member. Use staples when running cable in unfinished framing. For NM cable, buy plastic-insulated staples that are the right size for the cable.
To anchor metal conduit, hammer in drive straps every few feet. For PVC conduit or armored cable, use one- or two-hole straps; make sure they fit snugly around the cable or conduit.Clamp Types: Built-In Clamp
New-work plastic boxes have holes with plastic flaps that grab NM cable. With this type of box, you must staple the cable to a framing member near the box. Use these only in unfinished framing. When installing a remodel box or when installing a box that is exposed, the cable or conduit must be firmly clamped directly to the box.
A cable clamp comes in two parts: the clamp and the locknut. An NM cable clamp holds the cable using a strap with two screws; an armored cable clamp holds the cable using a single setscrew.
- Electrical Safety: Steps for Developing Safe Habits
- Your Electrical System
- Basic Electrical Wiring Techniques
- Electrical Repair, Problem Solving & Maintenance
- Switches & Receptacles: How to Replace or Upgrade a Switch or Receptacle
- Lights & Fans: Mounting and Wiring Light Fixtures & Fans
- Planning New Electrical Service
- Cable & Boxes: How to Install Electrical Cable & Boxes
- New Fixtures: How to Install a New Electrical Fixture
- Fans & Heaters: How to Install a Fan or Home Heater
- Household Voice, Data & Security: How to Install Your System
- Outdoor Wiring: How to Install & Plan Outdoor Wiring Projects
- Appliances & Circuits: How to Install Appliances & New Circuits