ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Recall Notice Kidde Smoke Alarms
by dougwells. 03/22/18 01:40 PM
by HotLine1. 03/22/18 09:08 AM
Recall notice: Southwire wi-fi wall switches
by sparkyinak. 03/15/18 06:03 PM
Goodman Manufacturing Recalls Modular Blowers
by Admin. 03/13/18 10:40 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
1 registered members (HotLine1), 50 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Sizeing a capacitor. #167860
08/21/07 08:52 PM
08/21/07 08:52 PM
leland  Offline OP
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
Hi All.

I have a "baldor" motor, rated-HP= "spl" (special) for a compressor.
115/230 V-- 15A @115V
2 caps (start and run) 1 is missing.
the one that is there is a 125V 270-324 UF (small- (run?))
The larger one is missing (start?)
How could or can I determine the missing size?

I have not done a good search yet, and am hoping to learn somthing.

Thanx Lee

Work Gear for Electricians and the Trades
Re: Sizeing a capacitor. [Re: leland] #167897
08/22/07 11:31 AM
08/22/07 11:31 AM
IanR  Offline
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
Typically, when the capictance is marked as a range it is a start capacitor. Run caps typically have a definate value stamped on them. They are also typically larger than start caps. Unfortuneately, I would have no idea as to how to guess the right value cap to use. Contact Baldor and give them the model number of the motor. They may be willing/able to help you.

Re: Sizeing a capacitor. [Re: IanR] #167908
08/22/07 04:27 PM
08/22/07 04:27 PM
leland  Offline OP
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
Thanx, My first thought was the larger of the 2 was start.

Interesting, now that it's mentioned, it makes sence.

Re: Sizeing a capacitor. [Re: leland] #168166
08/28/07 12:47 PM
08/28/07 12:47 PM
JValdes  Offline
Joined: Jun 2007
Posts: 301
South Carolina
Write down all the name plate info and call 770-772-7000.
This is Baldors number in GA.


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


Member Spotlight
Posts: 46
Joined: May 2007
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
Trumpy 5
Popular Topics(Views)
244,819 Are you busy
181,894 Re: Forum
171,977 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.022s Queries: 15 (0.004s) Memory: 0.9585 MB (Peak: 1.0915 MB) Zlib enabled. Server Time: 2018-03-22 19:38:47 UTC