Anybody Know Anything About Series Circuits?

Static Design

edit.......

Leo G

Because you know eq 2 and 3 and part of eq total you can figure out the missing information easily. Without the other info you would be lost because you really need 2 parts of the equation to get the third part.

It would be a lot easier if this was written out as a schematic. I hate word problems.

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480sparky

Easiest way to do Ohms Law question:

Create a grid, or spreadsheet, with a line for each load and columns for each variable.



Put in the numbers you already know, then you can easily apply The Wheel formulas to calculate the rest.

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Static Design

check the times on the ninja edit...... I remembered after I hit submit! haha

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Leo G

I laughed my ass off, I got it saved in a quote. I hate when that happens to me.

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HusqyPro

Do electricians actually use these formulae on job sites or is this more of a rite of passage thing?

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Static Design

If you don't know how electrons flow or how they react under certain conditions then how will you have any practical field knowledge?

Depending on your line of electrical work will determine if you will be calculating basic formulas, do I ever do calcs on finding Rt on a residential application ? No I do not, but when I am modifying honda computers for turbocharging and n20 applications then yes.

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HusqyPro

I was just curious. Just because I haven't seen an electrician break out a calculator on a job doesn't mean that some don't.

What would be some jobsite examples of how/when I would use this information?

Give me something I can relate it too and perhaps I can understand it better.

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naptown CR

your instructor is baiting you looking for a happy ending. Although OHM's law is useful to know almost nothing is dove in series any more.

Kgmz

Example: Some wall heaters in a residence.

Do I want 120 or 240 volt heaters and what size wire and circuit do I need.

Two(2) 1500 heaters

1500 watts / 120 volts = 12.5 amps, 2 of them will draw 25 amps so pushing it with 10 gauge wire on a 30 amp circuit.

1500 watts / 240 volts = 6.25 amps, 2 will draw 13 amps so would be better of this way with 12 gauge wire on a 20 amp circuit.

HusqyPro

Series is where everyting is hooked together. Unplug one component and nothing works.

Paralell is where everything feeds off a common source. Unplug one component and all the other stuff still works.

That sound about right?

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HusqyPro

Excellent example. Thank you sir.

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Static Design

Depending on wire type and how much room you have in the breaker box.


Right, just picture the old type Christmas lights and you will be fine. Here in a couple of weeks you will be doing parallel and series circuits together which are blast, well depending on your level of education you're pressuring.

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HusqyPro

I'm pursuing a Bachelors of Applied Science in HVAC and Appliance Technology.

With recent health problems I may scale that back to an Associates of Applied Science in HVAC and Appliance Technology.

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Inner10

I know I do, quite handy for some quick trig on funky bends too.

Onece you practice ohm's law enough (google it for practice problems) and understand it you will look back and feel really stupid...yet at first I could see it being rather daunting.

HusqyPro

Right now we're also learning about forced air heat. Gas, electric, and oil fired furnaces. Next semester I believe is air conditioning. After that we get into refrigeration and appliances. Which I'm personally very excited about. I'm looking hard at buying into a Mr. Appliance franchise. I'd also like to own a Aire Serve as well. I know the guy that bought Mr. Rooter is dominating the market down here right now. The guy that bought Aire Serve in Spokane supposedly put six big HVAC cntractors under his first year in business.

I see good things if I do well in this course and get my degree.

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Leo G

Wait until you get into fluid dynamics of air flow calculations. This will look like childs play.

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Leo G

So how'd you make out on yer homework? You getter done?

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HusqyPro

Yes I did. Missed a few. 92% was the grade I got.

If we get into that fluid dynamics stuff you may have to hold me.

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Leo G

Don't come looking for me. I don't know squat about it. I'm sure I can figure out the formula's, but I know I won't want to.

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