Wiring Question
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Senior User
Joined: Jun 2003
Posts: 285
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From: Kannapolis NC
Wiring Question
When using several relays ( 2-4) how is the power from the battery distributed to the various relays and then to the final user? Is there a junction box or terminal device available which will do this? I think it would be something which takes one wire from the battery and then has several connections to supply power to different relays. Anyone know of a device like this and where to get it? Thanks
Post Fiend
Joined: May 2008
Posts: 7,641
Likes: 21
From: Poway, Ca.
Yes.
What you are talking about is a "Distribution Bus" (if you are a pilot you have them on your plane - ie Main AC BUS A, etc it has the circuit breakers on it)
In a truck such as ours you would use a fuse block to perform this distribution.
Power is supplied from both switched (energized by turning on the key) and non switched (hot all the time) sources.
Examples of electrical items that are not switched - headlights/running lights; brakelights; glovebox and courtesy lights; horns; and the cigarette lighter.
Switched items include the radio; wipers; heater; signal lights; ignition; and gauges.
I wanted every appliance to have it's own separate fuse. So, I used two of the fuse blocks and distribute off those - one is switched and one is hot. The nice thing about these particular fuse blocks is that they actually have two separate busses - one of 3 fuses and one of 7 fuses. You can link them together with a 10 AWG jumper wire, if you want all ten places powered by the same source. Or, if you still have some 6 volt equipment, you can power one side with 12 volt and the other with 6 volt (that is supplied via Vol-ta-drop).
Here are the schematics of my power distribution (please disregard the toys) and a picture of the two fuse blocks mounted on the interior fire wall.
NAPA sells this high quality 10 place fuse holder. It is part No. BK7823208
What you are talking about is a "Distribution Bus" (if you are a pilot you have them on your plane - ie Main AC BUS A, etc it has the circuit breakers on it)
In a truck such as ours you would use a fuse block to perform this distribution.
Power is supplied from both switched (energized by turning on the key) and non switched (hot all the time) sources.
Examples of electrical items that are not switched - headlights/running lights; brakelights; glovebox and courtesy lights; horns; and the cigarette lighter.
Switched items include the radio; wipers; heater; signal lights; ignition; and gauges.
I wanted every appliance to have it's own separate fuse. So, I used two of the fuse blocks and distribute off those - one is switched and one is hot. The nice thing about these particular fuse blocks is that they actually have two separate busses - one of 3 fuses and one of 7 fuses. You can link them together with a 10 AWG jumper wire, if you want all ten places powered by the same source. Or, if you still have some 6 volt equipment, you can power one side with 12 volt and the other with 6 volt (that is supplied via Vol-ta-drop).
Here are the schematics of my power distribution (please disregard the toys) and a picture of the two fuse blocks mounted on the interior fire wall.
NAPA sells this high quality 10 place fuse holder. It is part No. BK7823208
Cargo Master
Joined: Feb 2008
Posts: 2,793
Likes: 128
From: Windermere Valley,B.C. Ca
Or let your imagination go nuts, surf distribution box/term and look at all the all new cool things that could be used, car stereo has some neat things (boom boom junk). Its just all taking a power in and making it into many, the wire gauge (10 ?) for the most part can be the same in and out (or 6-8 in, 10-12 out) as I wouldn’t think that you would be using everything at the same time.
stereo block.jpg
stereo block.jpg
Cargo Master
Joined: Feb 2008
Posts: 2,793
Likes: 128
From: Windermere Valley,B.C. Ca
Or what about this; (couldn't download picture)
http://cgi.ebay.ca/Marpac-Marine-Ter...d=p3286.c0.m14
http://cgi.ebay.ca/Marpac-Marine-Ter...d=p3286.c0.m14
