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Terminal Block.

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Alan Carter

Joined: 02 Jul 2012
Posts: 378
Location: Kent, England.

Posted: Tue Oct 22, 2013 2:17 pm Post subject: Terminal Block.

Hi.All.

Just a quick question to those electrical nerds out there.

I have just installed a terminal block in my Europa, the two bolts that hold the terminal block are bolted through the fibre glass on the inside of the instrument panel, nothing can touch the heads of these two bolts on the inside as they are insulated.

I want too make use of there threaded length as extra terminals so my eye let connectors can fit down them.

Odd maybe, but it would be useful if I could use them,  fibre glass is a none conductive material ,  is there Any reason this would not work,

Regards.

Alan

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BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Tue Oct 22, 2013 4:55 pm Post subject: Terminal Block.

Alan:

 What kind of terminal block do you have?

Here is a link to what I think you are referring to:

 https://www.google.com/search?hl=en&site=imghp&tbm=isch&source=hp&biw=1274&bih=898&q=terminal+blocks+electrical&oq=terminal+blocks&gs_l=img.1.2.0l4j0i5l6.1843.6298.0.10217.15.12.0.3.3.0.100.824.11j1.12.0....0...1ac.1.29.img..0.15.846.PmNwcMhs4AE#facrc=_&imgdii=_&imgrc=hJIlSYK4bCtOSM%3A%3BNW7ZZ7CTMeNseM%3Bhttp%253A%252F%252Fwww.monumentalelevatorsupply.com%252Fimages%252Fproduct_images%252FTerminalBlock.bmp%3Bhttp%253A%252F%252Fwww.monumentalelevatorsupply.com%252Findex.cfm%253Ffuseaction%253DshowEntity%2526entityID%253D238%2526catID%253D289%3B433%3B237

 

Here is also a picture - But, I don't know if it will come through.

 [img]http://www.monumentalelevatorsupply.com/images/product_images/TerminalBlock.bmp[/img]



 So, I gather that you are referring to the mounting holes to the left and right.  Well, the question is:  What material do the bolts go through?  If it is fiberglass than they would be insulated.  If it is metal than they would NOT be insulated and could be used for a GROUND point.  But, NOT for the B+ (positive side of the circuit) .

 As a side note:  It is recommended that you do NOT use more than 3 ring lugs (stacked) on a single screw of the insulated terminal strip and 4 ring lugs on a single point ground.  Of course the argument is : I'm experimental I can do anything I want.  And I have seen a solid inch (1") of screw stacked with ring lugs, I think there might have been 20 ring lugs.  Did it work?  Yes.  Is it safe? NO!

 

*Barry*

*“Chop’d Liver”*



NJ has taken the next step.  They are identifying cars with bad drivers.  You will notice some cars with a large red "R" on them.   That is to identify the drivers as "R"estricted.  Restricted is just a polite way of saying Bad Drivers.  Be cautious around them.

 

 



On Tue, Oct 22, 2013 at 6:17 PM, Alan Carter <alancarteresq(at)onetel.net (alancarteresq(at)onetel.net)> wrote:

[quote] --> RotaxEngines-List message posted by: "Alan Carter" <alancarteresq(at)onetel.net (alancarteresq(at)onetel.net)>

 

 Hi.All.

 Just a quick question to those electrical nerds out there.

 I have just installed a terminal block in my Europa, the two bolts that hold the terminal block are bolted through the fibre glass on the inside of the instrument panel, nothing can touch the heads of these two bolts on the inside as they are insulated.

  I want too make use of there threaded length as extra terminals so my eye let connectors can fit down them.

 Odd maybe, but it would be useful if I could use them,  fibre glass is a none conductive material ,  is there Any reason this would not work,

 Regards.

 Alan

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=411147#411147

 

 

 

 

 

 

 

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Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Wed Oct 23, 2013 4:39 am Post subject: Re: Terminal Block.

Hi Alan,



It will work. Flight Design and a few others do it just this way. Make sure the main bolt with the ground wire in the engine compartment that goes through into the instrument panel with the other main ground wire is nice and tight. A less than tight bolt can make your instruments jump around. Some use a long bolt and just put the ground wire eyelets over them and nut it down, you could use two bolts with a jumper if you have too many wires and Aircraft Spruce sells a ground block that you can use that has spade push on connectors.

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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

Alan Carter

Joined: 02 Jul 2012
Posts: 378
Location: Kent, England.

Posted: Wed Oct 23, 2013 8:47 am Post subject: Re: Terminal Block.

Hi Barry, Rodger.

I have posted photo so you can see what I am doing.

Basically I am fitting a Fuel flow meter to the aircraft, my plan is for me to make up the gauge panel plus some illuminated switches and do all the cosmetic work plus fitting all the components in place like the 2 senders and get it wired up, keeping the plane flyable so as I can use it.

Then at a later stage get my inspector to come over, and finish off, do the fuel pipe line work, flow tests, and sign it off.

As you can see lots of grounds wires from the switch LEDs, etc,

I can make about 4 or 5 lugs per terminal, this is why I want to make use of the terminal blocks fixing bolts, and use them as extra terminals,

And yes they do fix into Fibre Glass,

I am thinking it will be all OK , but just to be sure but this post in.

Regards.

Alan

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s.clive.richards(at)homec
Guest

Posted: Wed Oct 23, 2013 1:51 pm Post subject: Terminal Block.

Alan

            Not clear what type of terminal block you mean but if you are 

using the fixing bolts make sure you clamp the ring terminals between nuts 

not against the fiber glass.

As you are in UK Parts for aircraft sell busbar blocks with   5, 8 & 10 

terminals. & aircraft grade wire

http://www.parts4aircraft.com/PBSCCatalog.asp?ActionID=67174912&PBCATID=1543515&PBCATName=Sockets,%20Plugs%20and%20Bus%20Bar

Are you using coloured aircraft or pvc ?

---

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Alan Carter

Joined: 02 Jul 2012
Posts: 378
Location: Kent, England.

Posted: Wed Oct 23, 2013 2:23 pm Post subject: Re: Terminal Block.

Hi,

Its a 10 pin terminal block, and yes I would bolt the eyelets up between the nuts.

I can see no reason why this should not be fine, all bolted up tightly  together. But I had this thought in my head.

It was just a thought that maybe not using the terminal block itself, but using the fibre glass of the instrument panel may induce some electrical charge into it, and make it more sensitive to a lighting strike, most probably not , but just wanted to check it out.



As you mentioned "Parts For Aircraft", I like to give credit where credit is due.

I find Parts for Aircraft a very helpful and honourable company to deal with, and would recommend them for any parts you may need.



Regards.

Alan

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