Electrical System Drawing

[PA14driver]

Anyone have an electrical system drawing they are willing to share or some advice. I wish to use circuit breaker switches plus a split bus for the avionics. I am starting from scratch and I don't know what wire sizes to use. My understanding is the circuit breakers are there to protect the wires. I did come across the Basic Electrical System Drawing for VFR on the B&C Specialties website that certainly is a help. I have searched this site and have not come across what I was looking for.

 

[Fortysix12]

Any repair manual of any piper has them,. Pick and chose what components you have. A member sent me one but it's on the computor at the hangar.

 

[musket]

Sir,

This site may provide some of the info you're seeking:

http://www.aeroelectric.com/

 

[JayH]

PA14,
There is a diagram in my gallery that I used as a guide. It is an older diagram from the Bengalis book, so shows some heavier wiring and such, but otherwise is pretty straight forward.

J

 

[mike mcs repair]

wire sizes

double check this with the wire chart for your specific application, but the common sizes I use of the top of my head....

(16 ga is the one you will use most)

18 ga small gps, some b&C alt wires(see the install diagram), some electronic instruments,

16 ga. wire for most everything little, some b&C alt wires, nav,tail, strobe power, T&B, radios(though some times have twisted pairs),( you may find some things here that can go smaller, with the new led lights maybe ect.) (if land lights are on gear you may be close enough for 16)

10 ga land lights out in wing,alt output, alt ground ,buss, (most use 10 ga for buss/alt, (but piper for some reason went way overkill with their last batches and uses 8??, and a BUNCH of redundant grounds, must have hired on someone formerly building tanks)

8 ga buss?

edit: 2 or 4 for starter cable, on the -14 you may find room on firewall for battery & solenoids then use the lighter 4

 

[NimpoCub]

'14 driver,
This MAY be what you're looking for...

What Mike sed is GoodStuff. I have a Word.doc all about wire sizes if you send me your eddress. I don't think I can attach a file to your PM thingie. I also have the modified wire diagram for installing the little N-Denso alternator.

 

[Gordon Misch]

Electrical Drawing

Hi Logan -

Could you please email me a copy of that electrical info you posted? Thanks!

gordon.misch@gmail.com

 

[Darrel Starr]

Check out AC 43.13 chapter 11. Table 11-7 has the recommended wire size -- it depends on amps and wire length.
http://rgl.faa.gov/REGULATORY_AND_G...99C827DB9BAAC81B86256B4500596C4E?OpenDocument
Also, I have a wiring diagram for our Super Cub that is wired with EI instruments, a Garmin 496, ICOM A200, PM 1000 intercom, Bendix King Transponder, Bose head sets, Pulse Lights, Whelen strobes, etc. it shows all wire sizes. I have several of these diagrams -- if you or anyone else would like a copy just email me at darrelstarr@aol.com and I will send one to you. These diagrams are paper copies so please send your mailing address and I will slip a diagram into an envelop for you.
Darrel

 

[PA14driver]

All - Thanks very much for taking the time and providing this information and resource material. What I perceived last night as over whelming looks a lot better tonight, although I have to put some careful thought into this. I think a sketch followed by checking wire sizes against the loads will be the place to start. 43.13 has the engineering detail although I suspect after checking that out the wire sizes Mike is suggesting will end up the same. Further I can double check the SuperCub wiring sizes from the schematic Nimpo Lake sent as a test.

Your support is awesome!

John

 

[Iflylower]

Nimpo,

I'll have to play the "What's Missing in the Image Game" to find any differences between the two schematics. I'm sure there is one, it must be minor.

Thanks for posting, I was just looking for that last week.

 

[NimpoCub]

I didn't see a diff either, but they are both marked with ser.# ranges, so one of them is the "new & improved" one.
An avionics/'lectrician bud modified the one for the alternator change, & that's the one i used.
The Word.doc is the most useful one.

 

[DaCub-DaCub]

To PA-14 Driver
I did exactly what you are contemplating to my PA-14 some 15 years ago.
I basicly emulated a cessna wiring diag with the split master switch heating up a split radio and main busses.
The circuit breakers being lined up are commoned by a small alum. bar. The main bus contactor is located at the battery box along with the starting contactor.
Being an electrical worker I made an elaborate schematic prior to the project. I will dig it out and have the CAD guy in our engineering group make a pdf to send. Please allow a day or two.
One recomendation as the wire lengths are short behind the panel (weight isn't an issue), don't use anything smaller than 16ga. for the reason that smaller wire lacks mechanical strength.
Bruce

 

[Mush]

Does anyone have an electrical system schematic for an earlier PA-18 (S/N 18-8721 range) like the one NimpoCub posted for the newer models? Things get a little different having a generator. I'm pretty sure I have checked all gorunds but just want to make sure I'm not missing one.

 

[DesperadoPilot]

Ditto on what Mush said....

 

[cubunltd]

L21 Maintenance manual has the older wiring diagrams.

 

[Steve Pierce]

Here is one.
View attachment PA18 Electrical.pdf