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08-10-2012, 05:14 PM
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#1
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Moderator
Join Date: May 2009
Location: Chapel Hill, NC
Posts: 12,013
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240V Lightning or Surge Protectors
I am looking for a 240V protector to use for a 240V well pump. All the surge and lightning protectors I have found need a neutral. There is a 10/2UF going to the well house. I wanted to put protection out at the well house as well as at the home. I really don't want to tie the neutral of the protector to the egc. Anyone know of something out there for this purpose.
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08-10-2012, 05:26 PM
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#2
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Senior Member
Join Date: Jul 2011
Location: Ontario, Canada
Posts: 349
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A MOV should do the trick. Available in 250 and 275 volt. Put this across your feed. Have to select the amount of power dissipation you require. Simple to use to suppress power spikes but good luck with lightning strikes.
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08-10-2012, 05:34 PM
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#3
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Senior Member
Join Date: Nov 2007
Location: MD.
Posts: 1,233
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Dennis, if the above suggestion doesn't work for you at the well, then try this, it's out there and for this purpose.
10/3 and a shovel/backhoe
Well (no pun intended) you asked.lol
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niteshift
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08-10-2012, 05:42 PM
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#4
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Moderator
Join Date: May 2009
Location: Chapel Hill, NC
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Quote:
Originally Posted by Tsmil
A MOV should do the trick. Available in 250 and 275 volt. Put this across your feed. Have to select the amount of power dissipation you require. Simple to use to suppress power spikes but good luck with lightning strikes.
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Thank you-- I went to the site that sells them and they are asking all kinds of info. that I have no idea. http://www.mouser.com/Passive-Compon...FcGf7QodGXAAqA
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08-10-2012, 06:38 PM
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#5
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Senior Member
Join Date: Jul 2011
Location: Ontario, Canada
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08-10-2012, 06:43 PM
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#6
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I void warranties
Join Date: Jun 2009
Location: AZ
Posts: 10,856
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Use the pre package protector not individual MOV's. Especially since you can put the pre made unit in a knock out so if it pops after a surge there won't be blown up MOV in the box.
Putting the white wire on the EGC won't hurt.
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Last edited by Jlarson; 08-10-2012 at 06:56 PM.
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08-10-2012, 06:54 PM
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#8
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Moderator
Join Date: May 2009
Location: Chapel Hill, NC
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Quote:
Originally Posted by nrp3
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Those are what my suppliers sell but I assumed the white wire had to connect to the neutral. 
Thanks all
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08-10-2012, 07:01 PM
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#9
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Can't Remember
Join Date: Jan 2009
Location: New Hampshire
Posts: 3,223
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What got me thinking about those was the little grey round things hanging off panels or well pump equipment. Now that I look at the specs closer, it shows all the wiring going to neutral, but in the specs it shows L1,L2,N/G so I'm not sure what to think. Sorry
Last edited by nrp3; 08-10-2012 at 07:10 PM.
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08-10-2012, 08:19 PM
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#10
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Senior Member
Join Date: Jul 2011
Location: Ontario, Canada
Posts: 349
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Quote:
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Originally Posted by nrp3
What got me thinking about those was the little grey round things hanging off panels or well pump equipment. Now that I look at the specs closer, it shows all the wiring going to neutral, but in the specs it shows L1,L2,N/G so I'm not sure what to think. Sorry
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You can use neutral or ground with these, or none.
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08-10-2012, 08:21 PM
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#11
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Senior Member
Join Date: May 2008
Location: Texas
Posts: 575
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google MCG surge protection
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08-10-2012, 11:56 PM
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#12
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God-fearing Volt-head
Join Date: Feb 2011
Location: McMinnville, TN, USA
Posts: 954
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