Showing posts with label fuse. Show all posts
Showing posts with label fuse. Show all posts

Saturday, September 12, 2015

Wiring and bullshit

Today aside from not feeling very well anyway, I was rather depressed by the baloney I'd been fed by imbeciles on the school bus group. Needless to say, I'd already removed the forum from the forum reader. In fact there seems little point in even having Tapatalk since that was the only forum I used.

Work was slow with many breaks broken by a persistent cough. Having said that, the under counter breaker box wiring was completed and the lid closed on that part of the electrics.

After completing the internal electrics by the simple act of closing the fuse box I started the rest of the electrics. The intent was to finish the electrics today but whatever bug I have is sapping my energy badly. The first task was to make a patch with a hole big enough for the cable gripper for the inlet cable. If you remember, the knockouts were way too big. It took a while to cut the aluminum with a hole saw intended for wood but it was done. Then the patch was riveted in place.

Normally I would use the right tool for the job but since the bus conversion is a one off job with no likelihood of a repeat and since the tool had been retired having done its task as well as the proper tool not being available, I made do.

The next task was another inlet hole but this was for the 55A cable from the other breaker box. This was through steel but the technique was similar. After allowing the tool to scribe a circle, I went around the circle drilling a series of small holes in order to make the work of the poor little saw easier.

The hole being cut, it was time to work on the gripper for the cable that leads to the electrical supply. This is known as a pigtail connection. I will put a proper socket eventually but for now and for system testing, a pigtail will do.

The electrical manager at Lowe's couldn't supply a cable gripper of an appropriate size but suggested a neoprene bung and drilling an appropriately sized hole in it. Very carefully holding the bung in between the fingers of one hand and a power drill in the other, I bored a hole through the bung then cut it to an appropriate length. Lubricating the cable with WD40 the bung slid on before the metal halves of the gripper were fastened together.

The plan tomorrow is to attach the main breaker box to the cable coming from the distribution breaker and to attach the power cord. This will all take place inside the hillbilly cable compartment which, as you can see, needs to be rebuilt.

Ideally I'd shorten the cable from the distribution panel and fasten the main breaker box to the metal wall in the background which is the wall of the starting battery compartment. That won't happen though as rebuilding the compartment might change the location of the breaker box.

One of the silly things that was told to me on the accursed school bus forum was that breakers were unidirectional. Now that doesn't make a whole load of sense since with alternating current, the current goes in both directions. I had to check because the seed of doubt had been planted. I know fuses work by burning out a wire when the current goes too high. It seems breakers are simple electro mechanical devices that perform the same function.

I think there's more room for problems with malfunctioning mechanical devices but there's nothing there that would indicate polarity being at all important. The plan is to set the main breaker to cut both legs of the circuit simultaneously, leaving only the earth wire connected.

It all goes to show what a load of complete bullshit I was told on that schoolbus forum. I'm so glad I saw through their little game and left them. I just pity the next sucker that believes them.

Once the wiring is completed, the testing will commence. That's where the fun begins. Everything should be wired correctly since I've been fastidiously following the rules for polarity. It'll be a case of trying those socket testers and an electric screwdriver.

Friday, August 21, 2015

Starting with electrics

Today I had enough energy after work to visit Lowe's to pick up some electrical supplies. I now have a breaker box although I suspect it might be a little oversized for what I need. They were put into the bus to await commencement of the electrics. I like to be a little ahead.

Meanwhile, here's a photo of my almost cleared countertop. By the end of the weekend, that countertop will be cleared and repainted.

Today also, a surprise phonecall. This morning, Eric who's currently touring Canada rang. I didn't answer as I was otherwise employed so this evening, I rang him. We had a nice chat about the bus, my plans and electrics.

His recommendations were to go for a secondhand fridge. His opinion of the Haer dorm fridges was that they were power hogs. His recommendation was to go for a small household fridge or a 12v fridge. I think initially, I might just use an ice box.

From Eric's travels, the 30A socket was the most common at campgrounds. This means that I've way overdone it with my breaker box. Really, I want each socket on a separate breaker but the box is a bit big. I'll have to see if I can fit it or whether I should exchange it for a pair of smaller boxes.

On the 12v side, Eric recommended hunting for an Opel Astra fuse box from a scrapyard. Apparently GM built a copy of the Opel Astra that was identical on all levels. Another recommendation was some kind of smart relay that could be used to make cabin batteries charge from the alternator.

It was such a high speed conversation that I missed a lot of what was said. Really I need my bus and Eric to meet. I think he'd have a blast redoing bus wiring, wiring in trailer lights and so on. That's unlikely to happen until next year though.