Electrical Conduit Sizes Chart

Conduit cable fill chart this chart for conduit size for cable is based on the 2017 nec and uses common conduit types and wires.

Electrical conduit sizes chart.

For example a 1 inch pvc pipe is actually 1 315 inches in outside diameter and 1 029 inches in inside diameter. According to national electric code us nec or nfpa 70 article 344 for rigid metal conduit and article 358 electrical metallic tubing. Carlon schedule 40 and schedule 80 conduits are designed for use. An electrical distributor supplying everything from light bulbs and dimmers to plcs and industrial automation equipment.

A conduit must be supported at intervals no longer than 3 m 10 ft and fastened not more than 0 9 m 3 ft from a box fitting etc. A conduit fill table guide including trade size and wire size and conductor size. Need to see electrical conductors in a quick and easy table. Size copper aluminum diameter wires in conduit.

Just select the conduit type and the wire insulation to get a quick table of conductor properties. 60 c 75 c 90 c 60 c 75 c 90 c 1 2 3 4 1 1 1 4 1 1 2 2 2 1 2 3 3 1 2. Selecting the right pvc conduit for electrical wiring. For commercial industrial and utility usage allied pvc conduit and duct is proven durable and effective for years of maintenance free performance in underground encased and exposed applications in accordance with the national electrical code.

Find the type of conduit that you want to use in table 4. Fittings follow this same pattern a 1 fitting has a 1 315 inch opening to accept a 1 inch pipe which actually measures 1 315 inches in diameter. Hundreds of electrical products and tools to select from. Pvc pipe sizes are different than the size the pipe is called.

The gray color makes it easy to identify electrical pvc conduit. Pvc conduit is commonly used for underground electrical wiring. Electrical metallic tubing is not threaded and must be connected to junction boxes and the like with conduit connectors that secure to the tubing by means of a set screw or collet and nut. Schedule 40 pvc is the most commonly used for underground wiring.

Pvc pipe sizes chart. If you re using electrical metal tubing emt conduit you ll see that the closest size that you need is a 1 in conduit which gives you a 39 fill.