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Old 01-09-2012, 03:55 PM   #11
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Re: Electrical Help

Quote:
Originally Posted by Accordion
Dan, You perhaps may not know what you are talking about but you sure play cool guitar.
That is also debatable . But more to the point, could I safely plug my guitar amplifier into a modified sine wave inverter? And would it make a difference if it were my class A tube amp or my solid state amp? Ah but these electrical questions seem to evoke the most heated debates...
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Old 01-09-2012, 05:10 PM   #12
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Re: Electrical Help

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Originally Posted by Diesel Dan
[... could I safely plug my guitar amplifier into a modified sine wave inverter? And would it make a difference if it were my class A tube amp or my solid state amp? ...
I will get blasted for this but.... Go to your local dealer of amps and such equipment or contact the manufacturer of your amp and ask them. I'm sure both have had this question asked of them many times before. I would suggest the amp manufacturer first.
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Old 01-09-2012, 07:09 PM   #13
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Re: Electrical Help

I know we're getting a little side tracked here, but I've been using a 6000 watt modified sine wave inverter for over 3 years running a fridge, ac, and a bunch of other misc equipment. So far, I haven't had any troubles. Amp's, however, are the only equipment I've not been able to run on pure sine. I run sound and power for our burningman camp, and if I run our amps off of a modified sine inverter, we get a loud humming. Goes away when plugged directly into the generators.

also, Bender's comments on wire are spot on.
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Old 01-09-2012, 08:35 PM   #14
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Re: Electrical Help

haha you guitar players don't bother me. feel free to carry on. icnivad thank you verrrrry much. you cleared up of ALOT of my questions.

i plan on creating a common storage compartment under the bus to hold the battery bank. I believe the "one way power isolator" sounds more fit because we will probably want to use a little power from the bank once the bus is turned off. A mini fridge/freezer would be nice but in your opinion how long could it go on 4 deep cycle batteries if the bus was turned off? if its only a couple hours then we will probably scratch the mini fridge idea.

originally we thought we would play it safe with a 2500 or 3000 watt inverter but would that be overkill you think? we might have an LCD tv, couple cell phones, and couple laptops plugged in all at once.

We will probably jus run extension cords to save us the hassle of an electrical box and all that fun stuff. lol

we had planned on getting a voltmeter but thanks for the reminder!

also when you say "so your 12v side will need thicker wire than your 120v side." you mean side of the bus, cause from my understanding they should NEVER be by each
other cause one is AC and one is DC..and it will lead to an epic fail? lol

and is a 2nd alternator something everyone has?
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Old 01-09-2012, 10:46 PM   #15
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Re: Electrical Help

I only have one alternator. i can see the argument for having two, but, personally, i wouldn't go there until one wasn't enough. Having two alternators is a method of isolating your power at the corest level, so if you get a second alternator, don't worry about an isolator, since you'll have two seperate circuits.

I can run a full fridge for about 2 to 3 weeks on my 17 battery bank, so 4 batteries should be good for a couple of days at least.

As far as inverter size, I would say go with overkill. If you don't, you'll be wishing you did down the line.

And I don't worry too much about running 12v and 120v next to each other. I just meant that if you think about the power flow, it takes more amperage getting to your alternator at 12v for an equal amount of power at 120v.
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Old 01-09-2012, 11:26 PM   #16
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Re: Electrical Help

Only reason why I suggested for him (and myself) is more cars dont run at the higher end of their load out up very often. My thinking is if you have a larger battery bank it could possible put a single alt over worked? Having one working alt versus none is always a good thing in my book? Maybe being a Navy man (primary system, back up system, and back up to the back up system) has been beaten in to my dna?

I dont like air pumps (emission control type) and I can take mine off and having a 2nd one would make too much sense in my case. I know peoples use and design very greatly here.

Just food for thought.
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Old 01-10-2012, 03:36 AM   #17
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Re: Electrical Help

just curious about you guys' opinion. price isn't really an issue between the 3 but in your opinion which one is the best? I know vector is a fairly common brand that alot of people havent had the worst luck with but how bout Milwaukee? thanks

http://www.ebay.com/itm/Milwaukee-Po...ht_4193wt_1165


http://www.ebay.com/itm/Power-Drive-...#ht_500wt_1413

http://www.ebay.com/itm/Vector-2000-...4#ht_1157wt_80
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Old 01-10-2012, 03:46 AM   #18
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Re: Electrical Help

for the so-so inverter... harbor freight has a 6000/5000 one for $499. this month.
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Old 01-10-2012, 10:47 AM   #19
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Re: Electrical Help

I have 3 of these I've gotten for various projects
http://www.ebay.com/itm/NEW-Cobra-CP...item5ae30d1da5

I plan to try to run them at about 80% (I read this in several forumns)

I use these in my other projects and will move it all over to the bus, I don't plan on having alot of amp draw on any one inverter this way I will always have a backup that can be swapped with little effort

example:

1 for kitchen area 700watt microwave,800watt roaster pan,crock pots etc,only need to run one at a time really

1 for fridge/freezer mod

1 for bedroom area

only one that "has" to work is the fridge/freezer so I can always move plugs around since all three will be mounted together,and missing anyone for warranty work isn't really an issue

Just my thought's sounds good in my head
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Old 01-10-2012, 09:10 PM   #20
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Re: Electrical Help

Quote:
Originally Posted by bansil
I have 3 of these I've gotten for various projects
http://www.ebay.com/itm/NEW-Cobra-CP...item5ae30d1da5
...
I have the same one. So far, so good.
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