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roger
Senior Member
Joined: 09 Mar 2006
Posts: 1008
Location: ontario, canada |
Relay question
I;ve wired up a bunch of realys for headlights, fans, choke ,even for a multi 12 V "key on" power source & i;ve just noticed that one of em, the top piece, the "brains" of the relay reads -2 x 15 amp & i need a 30 amp one.
I can just switch the top part, to a one with a 30 amp rating, i'm pretty sure, eh?
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roger powell
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Mon May 16, 2011 9:23 am |
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GerryProctor
Senior Member
Joined: 10 Mar 2006
Posts: 660
Location: San Antonio, Tx |
If the wiring to that circuit is rated for 30 amps for the run, then you could. Otherwise, be prepared to let the smoke out of the insulation.
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Mon May 16, 2011 1:52 pm |
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roger
Senior Member
Joined: 09 Mar 2006
Posts: 1008
Location: ontario, canada |
relay trigger
I have this 30 amp rated relay hooked up to supply 12 V "Key on"power to a circuit board with 4 fused outlets on it, each with a 20 amp fuse.
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roger powell
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Tue May 17, 2011 9:00 am |
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GerryProctor
Senior Member
Joined: 10 Mar 2006
Posts: 660
Location: San Antonio, Tx |
If the "key on" pulls the relay, that's how it should work if that's what you want. I may not understand the description properly; You have a single relay rated for 30 amps with four 20 amp circuits on it? Two 20 amp circuits running through a single 30 amp relay -regardless of individual circuit fuses- will melt the relay. If the total pull on the circuit is within its capacity, then no problem.
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Tue May 17, 2011 10:54 am |
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donwight
Senior Member
Joined: 17 Jun 2008
Posts: 100
Location: ha. md. |
and relay's are rated for intermittant loads and continuos loads.
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Tue May 17, 2011 11:24 am |
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roger
Senior Member
Joined: 09 Mar 2006
Posts: 1008
Location: ontario, canada |
Gerry - Am i ok??
Ok, let me explain, i do see what you mean though
I needed a number of 12v Key on sources underhood & instead of scrambling under the dash looking for them, i followed this article at ford muscle site to get sources to power:
1- Holley choke
2- a 12 v key on source to trigger the electric fan Varible speed module, the module does have its own 12 v power source right off a battery hot dedicated to it only
So, i;ve got a Relay, & from the #87 terminal a 12 G. wire runs to a small panel mounted on inner fender, that has 4 outlets for 12 v key on power only.
#86 terminal i have 1 12 V key on power source from underdash,
#30 is 12V power from Batt. & #85 is ground
My buddy is doin the samething, for 12v key on source, at least wired the same, but uses a Ford starter solenoid instead of a relay
Gerry - I don;t pretend to be a Electircal guy, if i;ve messed up here somehow leeme know before i fire here up,eh!!!
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roger powell
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Tue May 17, 2011 9:00 pm |
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