ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Dimmable LED 2x4 lay in fixtures
by Potseal. 04/23/17 07:18 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,501 Are you busy
169,167 Re: Forum
162,511 Need opinion
Who's Online Now
0 registered members (), 58 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#183320 - 01/04/09 03:53 PM Home owner with water damage  
Elec25  Offline
New Member
Joined: Jan 2009
Posts: 2
Ohio
If you had to give a electrical inspection for a home that had water damage. What would be your solution/suggestion to assure the home owner their safty? ( meger testing, AFCI testing, ohms testing or just completly re-wire the home?)


Work Gear for Electricians and the Trades

#183323 - 01/04/09 04:07 PM Re: Home owner with water damage [Re: Elec25]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
How extensive was the water damage. Was the house under water or just squirted with a <fire> hose?
A megger checkout of the circuits most likely to be damaged would be a good start after you do a good visual inspection. Breakers that went underwater are certainly good candidates for replacement and replacing all the devices that were wet is not unreasonable.
Ripping out all the Romex may be overkill but if the kraft paper was saturated it still may be reasonable. All that said, I have seen Romex that was underground and very wet, working fine, holding a GFCI.


Greg Fretwell

#183324 - 01/04/09 04:29 PM Re: Home owner with water damage [Re: gfretwell]  
Elec25  Offline
New Member
Joined: Jan 2009
Posts: 2
Ohio
The water line break was on the upper floor and most of the damage was done to the first floor ceiling and walls. The broken water line ran for a week before it was discovered. The owners have already removed the damaged drywall and has had dehumidifiers running for over a week. No water got to the breaker box.

thanks for quick reply

Last edited by Elec25; 01/04/09 04:33 PM.

#183325 - 01/04/09 04:39 PM Re: Home owner with water damage [Re: Elec25]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
I would replace all the devices in the wet walls and megger those circuits while you have everything opened up. If you show any abnormality in the Romex, replace it, I bet it is OK.


Greg Fretwell

#183328 - 01/04/09 04:54 PM Re: Home owner with water damage [Re: gfretwell]  
pdh  Offline
Member
Joined: Jan 2005
Posts: 354
If the water got into the boxes, I'd expect the Romex would wick up some of that water through the open ends of the cable assembly. I don't know how far into the cable that would go.

Is it possible to dry Romex that has taken up water? What if you put a low voltage current through the cable and brought it up to 50C (122F) and left it "baking" for a week? Still, I think it might be cheaper to replace it and recover the copper from the old cable.


#183329 - 01/04/09 04:59 PM Re: Home owner with water damage [Re: pdh]  
pdh  Offline
Member
Joined: Jan 2005
Posts: 354
This makes me think about mechanisms to protect water pipes in much the same way as GFCI protects electrical wiring. Of course, measuring return flow back into the sewer would be hard to do. But maybe a flow meter in the main that has a threshold where the flow rate has to fall below that level at least every N hours (such as 3 hours), and shuts everything off if the flow stays high too long, might work to avoid those extensive levels of damage from long term water flow. But this would be for a plumbers forum. It was just a thought.


#183331 - 01/04/09 05:14 PM Re: Home owner with water damage [Re: pdh]  
leland  Offline
Member
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
Side track: I like the flow check Idea, Very useful for say a water heater,very practical idea with battery back up no less for those seasonal applications.Adjustable time, for main or small demands.Even a pressure switch for the water heater.

OK, Now that we got that outa the way.How old are the cables?
I would do a good inspection of the cables, at a min, I would change all jumpers from box to box affected,all affected devices.The good news is usually once the water finds it's path it stays with it.
Always think 'liability'.

Last edited by leland; 01/04/09 05:15 PM. Reason: liability


Member Spotlight
Joe Tedesco
Joe Tedesco
Boston, Massachusetts USA
Posts: 2,749
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.015s Queries: 15 (0.003s) Memory: 0.7843 MB (Peak: 0.9394 MB) Zlib enabled. Server Time: 2017-04-24 05:29:43 UTC