ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 7 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
wiring a 3phase convt. to air handler/condensor #58767
11/17/05 10:25 PM
11/17/05 10:25 PM
B
bot540  Offline OP
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
I need to wire to roof top condensor units and an air handler on two 3phase convertors. My boss provided me with a 7.5hp phase convertor and there was already a 15hp unit there already powering a unit not in use anymore.
I was going to pull #8's to the 15hp unit and feed one condensor unit(20 amps)and the airhandler with #10s. The air handler is single phase and draws about 5 amps but has a 3 phase heating element in it that draws 20 amps.
I'm going to put in a fused disconnect for each,40 amps for the convertor and 30 for the airhandler and 30 for the condensor)
I was then going to use the 7.5hp convertor for the other condensor unit. Fused 30 amps at the panel and at the fused disconnect for the convertor. I was planning on using a non-fused disconnect at the condensor and was going to pull #10s.
On both condensors it says max fuse size 30 amps.
Does this installation sound correct? I already have read article 455 and want to make sure I wire this correctly.


Jesus may have been a capenter,but God was an electrician.Genesis1:3
Work Gear for Electricians and the Trades
Re: wiring a 3phase convt. to air handler/condensor #58768
11/17/05 10:28 PM
11/17/05 10:28 PM
B
bot540  Offline OP
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
Here is a pdf file if this helps.
http://www.phase-a-matic.com/PDF/RPL-2005-C.pdf


Jesus may have been a capenter,but God was an electrician.Genesis1:3

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
HappyElectrician
HappyElectrician
Penn USA
Posts: 31
Joined: December 2011
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 16
Potseal 15
Popular Topics(Views)
243,576 Are you busy
180,374 Re: Forum
170,850 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.015s Queries: 14 (0.004s) Memory: 0.9416 MB (Peak: 1.0585 MB) Zlib enabled. Server Time: 2018-01-21 10:43:11 UTC