Studying for Master, load calcs ???

[tomwible]

I have been studying for the NH Masters, having difficulty grasping load calcs for dwellings, non-dwellings, etc. Using Snapz software as well.
1) Snapz says that you add in largest motor load at 125%, do you do that for the optional? I don't see that in the NEC Annex examples.
2) Is there such a thing as standard and optional calcs for non-dwellings?
3) For non-dwellings, is lighting taken at 125% or is that just for circuit sizing? Same for show lighting, is that taken at 125% for load calcs, or is that just for circuit sizing?
4) Why is this such a PITA?
Thanks in advance,
-Tom

 

[George Stolz]

Look at Article 220 again, and this time, take a piece of paper and cover any text that is not bold. Start writing an outline of the Article.

For Example:

Part I : General

(Leave Space)

Part II: Branch Circuit Load Calculations

(Leave Space)

Etc

Then, fill in the gaps with the sections, subsections, etc.

I know this may not sound very helpful, but I think if you take the time to diagram the Article, these answers and many more will become apparent. The entire code is one big outline, and in outlining this Article I think you will master it, so that you have confidence as you enter the test.

 

[luckylerado]

Do not spend too much of your time worrying on this as there are almost 0 questions on the test relating to load calcs. At least the Missouri (Prometric) and Anrkansas (Prov) masters tests had few to none. I do not know anything about the NH test but I found the best way to study is to get a good book of test questions and drill baby drill. This helps you know where answers are likely to be found in the book. Don't get me wrong; knowing load calcs is important but may only constitute 1% of your test.

 

[Pierre C Belarge]

Look at Article 220 again, and this time, take a piece of paper and cover any text that is not bold. Start writing an outline of the Article.

For Example:



Then, fill in the gaps with the sections, subsections, etc.

I know this may not sound very helpful, but I think if you take the time to diagram the Article, these answers and many more will become apparent. The entire code is one big outline, and in outlining this Article I think you will master it, so that you have confidence as you enter the test.

When students get confused and seem to hit a brick wall, I suggest a very similar treatment for studying. This is a very good idea to start with.

 

[George Stolz]

Do not spend too much of your time worrying on this as there are almost 0 questions on the test relating to load calcs.

(snip)

Don't get me wrong; knowing load calcs is important but may only constitute 1% of your test.

While I agree that you can get lucky and have few load calcs, I would recommend getting comfortable enough with the material that if you get a bad roll of the dice you can still hold your own.

Tests are expensive, better to be prepared to pass the first time.

 

[tomwible]

OK, good advise for studying, thanks. Of course I was looking for clarification but I will dig deeper and see.

Thanks again!

-Tom

 

[wireguy8169]

That was an excellent question, I am taking my test tomorrow and though I feel I am ready, that is the one part that i am a bit shakey on just cause there are quite a few ways to do it. I am going to get back out the books and do the outline that was suggested.

Thanks