Electrical Wire Heating Duct

Harlan madsen an electrical contractor in bloomington minn responds.

Electrical wire heating duct.

Hvac has priority over all trades in referance to location. I have metal supply and return hvac ducts in the ceiling and i know i m going to have to get across them occasionally. Electrical wiring methods used in these areas should neither add to the fuel load of a. Navigating the requirements in the national electrical code nec for ducts plenums and other air handling spaces can be difficult.

Electrical wire should be kept at least 1 away from radiator piping and heating ducts. Is it okay to fish electrical wiring through the wood framed chases built around hvac ducts and chimneys. Also known as 4 conductor cable connecting cable is electrical wire that supplies power and carries control information between the indoor unit s and the outdoor unit. Many times i install wiring in and on ducts that has to be there motirized dampers duct smoke detectors booster fans.

Air handling systems have the potential to convey smoke hot gases and flames from one area of a building into another as well as providing air supply for a potential fire. Most systems use a 14 awg 4 conductor stranded cable also written as. It is best to plan the path that will be used for installing the electrical wiring to avoid potential obstacles and prevent running out of wire. A piece of insulation can be used to keep the wire separated from a nearby heating duct or pipe if necessary.

Electrical wire must be kept at least 6 away from a single wall exhaust flue of gas fired heating appliances. Hi i ve got a fully finished basement and am thinking about putting canned lighting throughout. Unless your area works under a strange mechanical code that is simply not true. Typically connecting cable is run through conduit in accordance to local codes.

We fish romex type nm nonmetallic cable through hvac duct chases all the time without any objections from our electrical inspector as long as there are no sharp edges in the chase that might physically damage. No hits are allowed with any hvac device. No utility can run through an hvac duct. Is it ok for plain romex wiring to come in contact with these ducts or even lay on top of them.