## What is the OD of 1 1 2 EMT conduit?

Electrical Metallic Tubing (EMT) – Thinwall Conduit

Conduit Trade Size | Outside Diameter | |
---|---|---|

(in) | (mm) | (in) |

1 | 27 | 1.163 |

1 1/4 | 35 | 1.510 |

1 1/2 | 41 | 1.740 |

**Is conduit size ID or OD?**

Some typical US Customary trade sizes for conduit are ½, ¾, 1, and up to 4. Outside the US, conduit sizes are typically measured in millimeters and are based on the outer diameter. Some common metric outer diameter sizes are 20 mm, 25 mm, 32 mm, 40 mm and 50 mm.

### What is the OD of 1/2 electrical conduit?

0.840

Schedule 40

Trade Size | Average OD (in) | Minimum Wall (in) |
---|---|---|

1/2 | 0.840 | 0.109 |

3/4 | 1.050 | 0.113 |

1 | 1.315 | 0.133 |

1-1/4 | 1.660 | 0.140 |

**What is the diameter of electrical conduit?**

A conduit trade size of 1 inch has an actual inner diameter of 1.049 inches. 2-inch lengths typically have an inside diameter of 2.067 inches.

## What are the dimensions of EMT conduit?

EMT is available in trade sizes 1/2 through 4, and 10′ and 20′ lengths. Some manufacturers also produce EMT in a range of colors for easy system identification.

**Is PVC conduit measured ID or OD?**

PVC Pipe is identified by the Inside Diameter (ID) of the pipe. This measurement is known as ‘Nominal’ which means in-name-only, or a referenced name.

### How do you measure conduit size?

Calculations:

- Area of Cable =3.14 X (Diameter/2)2.
- Area of 50 Cable =3.14X (28/2)2 =615.44 Sq.mm.
- Total Area of 50 Cable=No of Cable X Area of Each Cable.
- Total Area of 50 Cable=5X615.
- Area of 185 Cable =3.14X (54/2)2 = 2289 Sq.mm.
- Total Area of 185 Cable=No of Cable X Area of Each Cable.

**How is PVC electrical conduit measured?**

PVC Pipe is identified by the ID (Inside Diameter) and is referred to as a “nominal” size which means “in name only.” However this confuses people and most novices try to use the OD (Outer Diameter) to order parts. If you do this, measure the OD of your pipe and find it the 2nd column of the chart below.

## How do you measure the diameter of a conduit?

Calculate the total diameter of the wires to determine the diameter of the conduit when placing wires of different gauge and type inside the conduit. Find the wire diameter in table 5 for each gauge wire and type. Multiply the number of wires for each gauge and type by the wire diameter. Total the results.

**How do you measure conduit?**

On the conduit, measure from the free end to be bent up the calculated number and mark the conduit. As an example, to bend 3/4” EMT conduit have a free end height of 8.5”, the table indicates to subtract 6” from the 8.5” which leave 2.5” from the end to bend up to make the mark.