Ask Experts Questions for FREE Help !
Ask
    fredandfreda's Avatar
    fredandfreda Posts: 2, Reputation: 1
    New Member
     
    #1

    Jun 3, 2010, 08:04 AM
    What size wire & conduit?
    What size wire & type/size conduit needed to run connection from 17.5Kw generator to 100A subpanel? Route from outside into crawl space and back inside garage to 'backup' panel?
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
     
    #2

    Jun 3, 2010, 07:19 PM
    Depending on the distance, you will need at least #4. Is there a breaker on the generator? At full power / load, your generator can handle about 73 amps @ 240 volts.
    Distance and voltage output will change this a bit, but 80 amps is the most your generator will handle. You will need 4 wires and at least a 1-1/2 conduit. 1 1/4 will work, but any bends and you will regret the choice.
    fredandfreda's Avatar
    fredandfreda Posts: 2, Reputation: 1
    New Member
     
    #3

    Jun 4, 2010, 07:49 AM

    Thanks for response. Distance is approx 100ft. I will run two 1.5 inch conduits for my electrician - I am just trying to save money by doing the grunt work. The portable generator is Generac 17500E with breakers on all circuits. For the conduit do I need metal or plastic?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
     
    #4

    Jun 4, 2010, 09:19 AM
    Why is it when people have an electrician hired, they need to ask question here?

    Conductor and wire sizing should be done by the electrician that is responsible for the project.

    Do not misunderstand me, we are here to answer questions, and under the premise that people are trying to do a project on their own.

    The answers given here are based on basic installation practices. Being on site and being able to make decisions based on actual situations may change any advice given here.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Wire size & conduit size for 60 am subpanel 150 from source [ 9 Answers ]

Indiana question: I want to install a 60amp subpanel 150 feet from the main panel. This is all exposed runs both inside and out in a commercial envirenement. What gauge and type of copper wire and what size conduit whould I use. How often should insert a junction box in the run. John

Sub Panel AMP Size and Supply Wire Size [ 1 Answers ]

I would like to install a sub panel in my garage I was told to run 6/3 Romex to supply the sub panel and have done so. The run is about 65 feet and I am now wondering after reading this site what is the max I can get for this size wire? I plan to supply a compressor (20 amp) and the garden...

Adequate conduit size for range and water heater wire [ 1 Answers ]

I want to place pvc conduit in walls that I am going to close up with drywall. The jobsite is a detached garage, into an apt. previously unfinished. I would like to have the conduit in wall so when I get to the point where I can afford the appliances and conductor I can move forward. There will be...

Wire & underground conduit size [ 1 Answers ]

Hi, I will need an electrical wire run between a small transformer and the main control panel for the house. I expect the transformer to push 220 or 240 volts at 200 amps. The transformer will be just under 140 feet from the panel. What size wire should I use and what is the minimum size...

Proper wire and conduit size? [ 2 Answers ]

Hi, I have just had a new pole building built. I had a 200 amp service installed. I will be installing 16 fluorescent light units. I will install them on at least 2, possibly 3 circuits. My question is what is the formula for figuring out the proper wire size, and how many of these conductors can I...


View more questions Search