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Date:  11-5-2018
Number of Hours:  5.00
Manual Reference:  Electrical Systems
Brief Description:  Tied all electrical wires into bundles

One of the things I needed to complete was to tie up all the electrical wires into bundles so the wires would support each other within bundles as the airframe vibrates. This prevents the wires from breaking at the terminals and in the soldered joints. My wiring was/is a jumbled mess and it took a long time to create bundles of compatible wires (power supply and grounds separated from radio/avionics wires conducting signals via RS-232 or ARINC 429). As I bundled each of the four compartments of wires, I turned on the Master and Avionics Master to make sure each of the avionics components completed a self-check successfully. I didn’t want to tie up all the bundles and then find out I broke or disconnected a wire because I would have no clue where it was broken. I started wrapping all the wires with waxed string but it was taking about an hour for a foot of wire bundled. I soon scrapped that idea and used plastic conduits with zip ties. I later talked to my tech advisor and he said it was OK to zip tie the wires without the conduit. He said it was best to use a copious number of zip ties because over time they get brittle and break if they are supporting any weight that is subject to excessive vibration. I did this with hopes I don’t have any problems later. I will never be able to pull an individual wire if I inadvertently put too much tension on some of the stragglers where I wasn’t careful to make sure they perfectly aligned in a bundle until they branched off to a termination point. I learned a lot and if I ever did this again, I would certainly be more careful when running the wires so they aligned with each other in the bundles. The good news is I don’t think I broke any wires in this process.
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Left Fore & Aft  Compartments Before

Left Fore & Aft Compartments Before

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Left Fore Compartment After

Left Fore Compartment After

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Left Aft Compartment After

Left Aft Compartment After

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