Wiring Heat Pump And Air Compressor Outside Building - Electrical - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools Display Modes
Old 07-27-2011, 07:14 AM   #1
Join Date: Jul 2011
Posts: 1
Rewards Points: 10

wiring heat pump and air compressor outside building

I am currently setting up my shop and in doing so i have some new equipment i am installing. i have a 5 ton package unit and a 60 gallon air compressor both with be located outside the building within a few feet of each other. there is about a 90-100 foot run to where they will be located to the panel box and no existing wiring is available for them so i will have to run new. this is a commercial space. i would like to make sure the wiring is up to code and was wondering what needed to be done to make that happen.

the motor on the air compressor has a a label that reads:
240v 15A60hz 1ph

the heat pump label is:
208-230v 60hz 1ph
it also says max amperage 60A

my question is what would be the most cost effective way to wire these both? seperate lines or a heavier single line set to a breaker box near them? also any wiring tips or tricks as far as conduit? can i use the cantex or does it have to be metal? or maybe even the flexible metal with wire already in it?

Thanks in advance and if you have further questions please ask away!


lcvette is offline   Reply With Quote
Old 07-27-2011, 11:44 AM   #2
" Euro " electrician
frenchelectrican's Avatar
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 5,369
Rewards Points: 2,000

As soon I did see one key word is commercal building the best answer is get a electrician come out and they will deal with it due there are few diffrent codes it have to be coverd plus what more with commercal buildings there are few diffrent voltage verison will show up they will run anything from 120/240 volt monophase all the way up to 480Y277 triphase supply so the electrician can able deal with it without issue.

I am not being harsh but you have to understand of safety of the commercal building they are pretty strict with the codes.



The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
frenchelectrican is offline   Reply With Quote
Old 07-27-2011, 05:02 PM   #3
Lic Elect/Inspector/CPO
Join Date: Apr 2011
Location: NJ
Posts: 369
Rewards Points: 250

What is the amperage and voltage of the panel?
NJMarine is offline   Reply With Quote
Old 07-28-2011, 01:32 PM   #4
Lic Electrical Inspector
electures's Avatar
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,826
Rewards Points: 1,108

What is the HP of the compressor? Minimum circuit ampacity of heatpump? Manufactures installation requirements for heatpump?

Best bet would be to install a subpanel at the location. Can't size it without all information.
All responses based on the 2011 NEC.
If you live in New Jersey click here. All other states click here.
Please check with local, county and state officials as laws may vary.
Sizing motors here. Online motor calculator here. Online calculators here.
electures is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1