Wire clearances from hot ducts and pipes

Electrical · Branch Circuit Wiring (Distribution Wiring) · printed page 100 (PDF page 101)

Book index entries

Ducts – and Pipes – Electrical Wire Clearances from Electric Wire – Clearances from Ducts and Pipes Wire Clearances – from Ducts and Pipes – Electrical

Text in the illustration

radiator piping
heating duct
wire
1"
a piece of insulation can be used to separate the duct or pipe from the wire
single wall exhaust flue (wood)
18"
single wall exhaust flue (oil)
9" to 18"
single wall exhaust flue (gas)
6"

Generated explanation

The illustration shows electrical wire clearances from radiator piping, a heating duct, and single-wall exhaust flues serving wood-, oil-, and gas-burning equipment. Radiator piping and the heating duct are shown with 1-inch separation from the wire, with a piece of insulation illustrated between the duct and wire. An annotation states that insulation can be used to separate the duct or pipe from the wire. The depicted wire clearances are 18 inches from the wood exhaust flue, 9 to 18 inches from the oil exhaust flue, and 6 inches from the gas exhaust flue.

Components

electrical wire radiator piping heating duct single-wall wood exhaust flue single-wall oil exhaust flue single-wall gas exhaust flue insulation separator

Materials

metal piping sheet metal duct and flues insulation