ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
MRI LED lights dimmer control replacement - wow!
by ghost307. 01/19/18 11:37 AM
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
VDE 0100 to introduce AFCIs
by LongRunner. 01/17/18 10:32 AM
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
1 registered members (Troy), 20 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Well pump readings #40086
07/12/04 08:00 PM
07/12/04 08:00 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
NC
I went to check out several wiring problems due to lightning today. One of the "hits" was the homeowner's well pump control. It blew it apart and also blew the pressure switch cover off, shorted out a wire and several other items. After installing a new "pump control" box, I thought I better ohm the wires out from phase wire to ground. According to my reading I was showing a direct short from each phase to ground. Since I had remembered in times past about getting some strange readings and at that point there wasn't anything else to do except to try it, I plugged the control in. The pump worked fine, except for a leak we found [Linked Image] I don't understand why it didn't short out though. Can anyone give me an explanation of this? I want to make sure there is no safety hazard involved here. The well in about 100ft. from the house and feeds the house with plastic pipe. I don't exactly understand why it is working. I appreciate any input. Thanks Steve...

Work Gear for Electricians and the Trades
Re: Well pump readings #40087
07/12/04 08:21 PM
07/12/04 08:21 PM
T
twh  Offline
Member
Joined: Mar 2004
Posts: 925
Regina, Sask.
I worked on one a few months ago. It was 240 volt, 3 wire plus one ground. I assume we are talking about the same thing.

Mine tested grounded at the controller and clear at the pump. The wire had worn through between the plastic line and the casing. Repaired, re-installed and it tested clear with a megger.

Your reading to ground doesn't sound good.

tim

Re: Well pump readings #40088
07/12/04 08:54 PM
07/12/04 08:54 PM
C
CharlieK  Offline
Member
Joined: Mar 2003
Posts: 21
Baltimore. Md. U.S.A.
Go to the manufactures web site. I know Franklin Pump has an excellent troubleshooting guide. I do freebie work at a large Boy Scout Camp that has 11 pumps scattered over 2000 acres and have downloaded the info for each model pump. It beats the guess work. Some of the pumps are 300' down.

Re: Well pump readings #40089
07/12/04 09:30 PM
07/12/04 09:30 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
NC
Charlie, you don't know the web site for Franklin pump do you? I pulled up one, but they didn't have a troubleshooting guide.
Any other expertise comments would be appreciated. I may try to see if there is a place at the top of the well housing I can check for some kind of voltage. This is an old pump, and there is no disconnect at it, therefore no place to get a good reading.
I want to make sure there is no hazard here [Linked Image]
I have to go back out tommorow to replace the part on the storage tank that leaked and need some ideas.
Thanks again, Steve

[This message has been edited by sparkync (edited 07-12-2004).]

Re: Well pump readings #40090
07/12/04 09:46 PM
07/12/04 09:46 PM
S
stamcon  Offline
Member
Joined: Mar 2001
Posts: 330
So San Francisco CA
Steve, try this link for a PDF installation/maintenance/troubleshooting download. This info is just for Franklin pumps, but might help some. Troubleshooting is down around page 43.
http://www.franklin-electric.com/Manual/pdf/fullAIM.pdf


steve


Steve
Re: Well pump readings #40091
07/12/04 09:59 PM
07/12/04 09:59 PM
S
SolarPowered  Offline
Member
Joined: Jul 2004
Posts: 625
Palo Alto, CA, USA
From phase to ground, or from phase to neutral? An electric motor has almost zero DC resistance, but the AC impedance at 60 Hz is much higher.

Re: Well pump readings #40092
07/12/04 10:13 PM
07/12/04 10:13 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
NC
SolarPowered, it is phase to ground, there is no neutral. It is a 240 volt single phase pump. Thanks, Steve

Re: Well pump readings #40093
07/13/04 09:57 AM
07/13/04 09:57 AM
N
n1ist  Offline
Member
Joined: Feb 2002
Posts: 183
Malden MA
Sounds like one wire faulted to ground, and the other one is showing the motor in series with the fault...

A --- MOTOR ---*--- B

If the * is the fault, A will show a little higher resistance to ground than B.

/mike


Featured:

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

 

Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,142
Joined: May 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 18
Potseal 14
Popular Topics(Views)
243,552 Are you busy
180,359 Re: Forum
170,837 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.025s Queries: 14 (0.005s) Memory: 0.9919 MB (Peak: 1.1513 MB) Zlib enabled. Server Time: 2018-01-19 21:35:55 UTC