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spst RELAY help... posted in tech too

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Old Jul 24, 2004 | 09:26 AM
  #1  
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Default spst RELAY help... posted in tech too

Hey-

I dunno what im doing lol... I know how to wire one relay. Id like to wire two or three relays as to use 2 or 3 switches to activate them.

I have three SPST relays sitting in front of me. I realize that bigger current goes through the 30 and 87 pins, while the small current 'kill switch' aspect goes through the 86 and 85 pins... respectively to their own switches.

HOW do i wire it so the bigger current passes through all three relays when the 3 switches are energized?
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Old Jul 24, 2004 | 05:38 PM
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Default Re: spst RELAY help... posted in tech too (B18EG6)

i'm not really sure of what your asking, but here goes. dont you just wire the large currents together in series. for example, the large current would go to the first relay, #30, then that relay's #87 would link to the second relay's #30, then second relay's # 87 would link to the third's #30 and then #87 would finish the circuit. And when all three relay's are energized the circuit for the large current would close. I'm thinking this is your answer.
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Old Jul 24, 2004 | 07:36 PM
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Default Re: spst RELAY help... posted in tech too (kunttherunt)

Ok my turn, if you are trying to supply 12v "high current" to 3 different things, daisy chain 12v+ "high current" to #30 of each relay. wire each load [thing you want to power] to #87 of one each of the relays, daisy chain switched 12v+ to #86 on all 3 relays, then wire one switch to each relay pin#85 , ground other side of switch. 94
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Old Jul 25, 2004 | 10:11 AM
  #4  
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From: MD
Default Re: spst RELAY help... posted in tech too (kunttherunt)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kunttherunt &raquo;</TD></TR><TR><TD CLASS="quote">i'm not really sure of what your asking, but here goes. dont you just wire the large currents together in series. for example, the large current would go to the first relay, #30, then that relay's #87 would link to the second relay's #30, then second relay's # 87 would link to the third's #30 and then #87 would finish the circuit. And when all three relay's are energized the circuit for the large current would close. I'm thinking this is your answer.</TD></TR></TABLE>

yep thats it! duh why didnt i get that.

what line to i inturrept to get a momentary switch to activate the starter, and what size relay do i need?
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Old Jul 25, 2004 | 02:48 PM
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Default Re: spst RELAY help... posted in tech too (kunttherunt)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kunttherunt &raquo;</TD></TR><TR><TD CLASS="quote">i'm not really sure of what your asking, but here goes. dont you just wire the large currents together in series. for example, the large current would go to the first relay, #30, then that relay's #87 would link to the second relay's #30, then second relay's # 87 would link to the third's #30 and then #87 would finish the circuit. And when all three relay's are energized the circuit for the large current would close. I'm thinking this is your answer.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18EG6 &raquo;</TD></TR><TR><TD CLASS="quote">

yep thats it! duh why didnt i get that.

what line to i inturrept to get a momentary switch to activate the starter, and what size relay do i need?
</TD></TR></TABLE> I will only ask why do you want to do this, run the load through 3 relays? 94
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Old Jul 25, 2004 | 08:16 PM
  #6  
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Default Re: spst RELAY help... posted in tech too (fcm)

doing this to use two different switches
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Old Jul 26, 2004 | 03:47 PM
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Default Re: spst RELAY help... posted in tech too (B18EG6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18EG6 &raquo;</TD></TR><TR><TD CLASS="quote">doing this to use two different switches</TD></TR></TABLE> ? 94
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