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dpdt switch

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nboog 
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Joined: March 29, 2012
Location: Michigan, United States
Posted: April 02, 2012 at 8:13 PM / IP Logged  
Could I use a dpdt momentary switch with this setup, or would I need a spdt momentary switch?
dpdt switch -- posted image.
i am an idiot 
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Posted: April 02, 2012 at 9:25 PM / IP Logged  

You can use a dpdt switch, but you will use only one pole of said switch.

nboog 
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Posted: April 02, 2012 at 9:50 PM / IP Logged  
so I would cap off one side, or would I wire them together?
i am an idiot 
Platinum - Posts: 13,667
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Posted: April 02, 2012 at 10:18 PM / IP Logged  
No need to cap off the unused 3 terminals.  You can use both poles if you wish. 
nboog 
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Posted: April 04, 2012 at 6:47 PM / IP Logged  
so both the positives from the relays would go to both on prongs on the switch, and the off would be grounded?
howie ll 
Pot Metal - Posts: 16,466
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Posted: April 04, 2012 at 7:04 PM / IP Logged  
Connect nothing to ground because at rest the grounds would be fed to the relays.
i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
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Posted: April 04, 2012 at 11:02 PM / IP Logged  

Let me look for a picture.

howie ll 
Pot Metal - Posts: 16,466
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Posted: April 05, 2012 at 1:51 PM / IP Logged  
It has just occurred to me that with a DPDT switch you wouldn't even need relays.
hotwaterwizard 
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Joined: December 11, 2003
Location: California, United States
Posted: April 05, 2012 at 8:39 PM / IP Logged  

dpdt switch -- posted image.

dpdt switch -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
nboog 
Member - Posts: 10
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Joined: March 29, 2012
Location: Michigan, United States
Posted: April 06, 2012 at 10:05 AM / IP Logged  
Awesome thank you guys very much!

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