[rpdwyer]

Hi all.

I have a master bath we are getting around to finishing on a 3rd floor. I want to put this bath on it's own 20 amp dedicated circuit. There is an insulated square duct that runs from the basement to the space now. Where this insulated duct work runs through the 2nd floor it's enclosed in a framed in chase sheetrocked over.

My first question is regarding codes and safety of fishing my 20 amp wire inside the chase along side the insulated duct work. What's involved with running within this chase? It would be sandwiched between the duct's insulation and surrounding walls of the chase which are just 2x4's. Does the line have to be stapled to the 2X4's during this vertical run?

My next question is running the wire to the 3 outlets, 2 fan/lights, and 2 vanity lights...if I ceiling has engineered trusses, can I run my wire through these trusses dropping down the walls for the electrical locations? Does the wire have to stapled at each truss?

Thanks,

--Rick

 

[joed]

As long as the cable is not within the duct you are fine. You don't want wires burning inside an air duct and spreading fumes through the whole house.

Fished wires do not have to be stapled within the fished zone.
Wires should be stapled at least every 4 feet when running where you can staple them. So staple them to at least every other truss.

 

[sparky48]

Seems you will need 2 circuits. One 20 amp dedicated circuit for the receptacles in the bathroom and a seperate lighting circuit. Fishing thru the finished chase is no problem as long as you're not running any wire thru the duct work itself.

 

[rjniles]

Seems you will need 2 circuits. One 20 amp dedicated circuit for the receptacles in the bathroom and a seperate lighting circuit. Fishing thru the finished chase is no problem as long as you're not running any wire thru the duct work itself.

As long as the receptacles, lights and fans are in the same bath, you only need 1 circuit.

 

[joed]

As long as the circuit does not leave the bathroom, you only need one 20 amp circuit.

 

[sparky48]

As long as the receptacles, lights and fans are in the same bath, you only need 1 circuit.

I do understand that but if I were wiring this for myself, I would surely add that lighting circuit. It doesn't take much with a hair dryer and some curling irons to eat up a 20A circuit. Add to that a exhaust fan and the lighting to boot. You can do what you want but I'm only saying what I suggested is what I would do. JMHO

 

[rjniles]

I do understand that but if I were wiring this for myself, I would surely add that lighting circuit. It doesn't take much with a hair dryer and some curling irons to eat up a 20A circuit. Add to that a exhaust fan and the lighting to boot. You can do what you want but I'm only saying what I suggested is what I would do. JMHO

As a suggestion that is fine but when you make it sound like code, it confuses posters.