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Old 05-06-2009, 02:32 PM   #21
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Re: Scotts first bus

i guess some people are jealous of that mighty fine bus of yers maybe if you drove it in reverse they will be happy
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Old 05-07-2009, 01:12 PM   #22
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Re: Scotts first bus

OK, once again I need to draw from the well of knowledge.

I am trying to draw up my wiring plan, and need some help with what can be with what.

I want to have two 110 plans, one from shore power and one from an inverter. I will have a portable solar panel for charging the 12 volt batteries, and also want to have a charger running off the shore power 110. I do not want to connect or run anything from the bus batteries, but will get another set for all interior needs, and want them to be also charged by bus alternator if need be.

The problem is that I have been told and read at various times that some 12v wires should not be run in same chase as 110 wires. Or maybe it was cannot run inverter fed 110 wires with 12 volt.......

I am also trying to figure out what guage of wire to use for the various runs throughout.

Electronics are not one of my specialties....lil help here?

As always, thanks for any ideas.
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Old 05-07-2009, 03:26 PM   #23
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Re: Scotts first bus

I don't see any reason to see why you can't run 110 and 12 volt wires in the same chase. I think most people believe that stranded wires are best for a skoolie, although i've used both stranded wire and standard romex with good results.

for connecting batteries and/or inverters i like 00 welding cable.

for regular wiring to lights/outlets and the like it ultimate depends on your end use, but it would be nice to use 12 guage wire for your 110 volt applications.

as for shore power/inverter power i like to power my entire bus from 1 circuit with a 20 amp male plug. Then i have to option to plug that into the inverter, shore power, or generator. This method is inexpensive, and gives you zero opportunity to accidentally plug your inverter into the power grid. The fancier option is to buy an expensive inverter. some fancy inverters will automatically switch between shower power/inverter power when you plug the bus in.
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Old 05-07-2009, 04:20 PM   #24
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Re: Scotts first bus

Quote:
Originally Posted by lapeer20m
I don't see any reason to see why you can't run 110 and 12 volt wires in the same chase.
AC wiring has a magnetic field constantly being created and collapsed around the wire. This magnetic field will interact with any other wires near it, inducing an AC electric charge in those wires. If you put an oscilloscope on an AC wire you should see a nice pretty sine wave. On a DC wire you should get a straight horizontal line. On a DC wire run too close to an AC wire you will see all sorts of spikes and sine waves.

If a DC line is run to (for example) an audio amp and runs next to an AC line running to (for example) an air conditioner, then when that A/C compressor kicks in you could see a huge DC spike hitting that amplifier. You will hear a "thump" in the speakers.

Sensitive electronics will care. lights and fans won't care.

the biggest problem I saw with ethernet cables was when they were run poorly in a drop ceiling too close to flourescent lamps. Talk about voltage spikes and data loss... lost a few network cards that way.

If you keep your DC wires at least 3 inches away from your AC wires, and only cross them at a right angle, you should minimize the problems. That is the installation spec for data cables.

Oh, and you should also follow the same rules for speaker wires and AC wires.

hope this helps,
jim
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Old 05-07-2009, 05:20 PM   #25
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Re: Scotts first bus

Thanks badPuppy that is some very good info. I might have to go and relocate my 110V wires. now i still can, soon it will be to late.
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Old 05-08-2009, 10:16 AM   #26
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Re: Scotts first bus

cool!

I am understanding everything except the inverter issue. should I run two separate sets of 110 wires? one from shore power and one from inverter and keep them away from each other?

If I understand everything else, I am going to run all 12 volt wires down one side of overhead chase, all audio type wires down the other side overhead, 110 wires coming from shore power under windows on one side and 110 wires from inverter down other side under windows..? or can I use the same wires for 110 and just use transfer switch?

I just went through the great "stranded vs solid" debate in the how to wire up the bus tutorial and here's where I stand on the issue: I don't know the technical part of the issue, but I have a few stranded wire extension cords that have been put through the ringer a few times and never failed, so I think I will go to home depot and spend a couple hundred bucks getting a good supply of 50' and 75' extension cords. I will get a few real heavy duty and get two different colors so I can separate the 12v from the 110 shore power and the inverter.

I am also thinking of getting two or three transfer switches (expensive, but i think vital.) to run one set of 110 wires and just be able to switch from shore to inverter power.

once I get all this figured out i get to start to work out the audio and video wiring mess

thanks
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Old 05-08-2009, 10:23 AM   #27
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Re: Scotts first bus

OK, I just had a brain flash

If I am running 12v power to an inverter changing it to 110v, why would I need to run 12v wires into the bus at all? what things am I going to be wiring up in the interior that would run off 12v?

I think it is time to let the brain rest for a while, is on overload.

Thanks in advance for help with this everyone.

Scott, the brain fried transit driver.
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Old 05-08-2009, 12:50 PM   #28
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Re: Scotts first bus

not sure if i'm understanding you right but here are a few things that are 12 v that you might want to wire to an other batterybank and not your starter batteries.
In dash radio / cd /dvd / player, AMP what ever you plan for sound, dont wanna run down your starter batt. while listening to tunes.
12 V interior lights, RV style types or LED's
12V waterpump
12V to the 2-way 3-way fridge
12V Aux. / cigarette lighter plug in for charging things like mp3players, i pod etc.
12V Fan / powered roof vent

thats just a few.....keep that brain working
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Old 05-09-2009, 12:42 AM   #29
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Re: Scotts first bus

OK,
I now have my one brain cell focused again. (Married with children)

I will need wires for all those items and maybe more. I am not going to disconnect anything that is currently wired and working if it is going to be in finished bus, but will be adding a lot of other things....

Thanks again.
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Old 05-09-2009, 11:28 PM   #30
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Re: Scotts first bus

whats a 2 way 3 way fridge?
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