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will this cause a short circuit?

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=78231
Printed Date: July 04, 2025 at 8:58 PM


Topic: will this cause a short circuit?

Posted By: speedstep1
Subject: will this cause a short circuit?
Date Posted: May 24, 2006 at 2:45 AM

hi,

new to relays so would appreciate if any1 could help me w tis....

posted_image

as shown by e badly drawn picture, a switch & a relay is connected between e 12V batt & e chassis... if e switch is 'on', & energise e relay, wont it cause a short cct, since its a direct connection between '+' & '-'??




Replies:

Posted By: steve schofield
Date Posted: May 24, 2006 at 3:54 AM
The relay has a coil inside that when energised with a pos & neg connection causes it to pull or push a floating contact. Because the coil has a resistance there will be no short curcuit! It could be said that the coil works similar to a magnet when energised. Take the lid off carefully and have a look!

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Posted By: speedstep1
Date Posted: May 24, 2006 at 4:14 AM
steve, thanks for the info! :)


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