Contractor Reference Tools Grounding Tools AC Systems Ground Size → Equipment Ground Size → Ampacity Tools Aluminum Ampacity Table → Copper Ampacity Table → Quick References Transformer Amps → Conduit Fill → Wire Type Picker Not sure what wire to ask for? Start here. 1. Conductor Material Select... Copper Aluminum / Copper-Clad Aluminum Not sure 2. Indoor or Outdoor Rated? Select... Indoor / dry location Outdoor / wet location Not sure 3. Application Select... In conduit Direct burial in earth In wall Free air / overhead Equipment connection / portable use Service entrance / feeder Not sure 4. Cable Style Select... Single conductor Multi-conductor cable Multi-conductor armored cable Flexible cord Not sure Common Starting Point Make your selections above. Choose the options that best match the installation, and we’ll point you toward a common wire type to ask about. Email Us for Current Price and Availability This tool is a product guide only. Final wire selection should be verified against project specs, installation conditions, and applicable code. Eric Hardin 6/4/26 Eric Hardin 6/4/26 Copper-Clad Aluminum NM-B: Relax. This isn't that aluminum Read More Eric Hardin 5/30/26 Eric Hardin 5/30/26 Retrofit Load-centers: Upgrade the panel. Not the wall. Read More Eric Hardin 5/30/26 Eric Hardin 5/30/26 Vapor Seal® Boxes: Passes code. No caulk. No foam. No gaskets. Read More
Eric Hardin 6/4/26 Eric Hardin 6/4/26 Copper-Clad Aluminum NM-B: Relax. This isn't that aluminum Read More
Eric Hardin 5/30/26 Eric Hardin 5/30/26 Retrofit Load-centers: Upgrade the panel. Not the wall. Read More
Eric Hardin 5/30/26 Eric Hardin 5/30/26 Vapor Seal® Boxes: Passes code. No caulk. No foam. No gaskets. Read More
