Recent content by sc57

Partha, I wasn't very happy with PE review course offered at Rutgers university (New Brunswick campus). I like on-line course offered by GA tech.

Use word design often, I knew someone who did lots of engineering calculation did not get approved.

looks great.

luckyboy886, In actual practice, what happens is first you calculate wire size from load current x 1.25. Then check for voltage drop, make sure it is below 3%. You don't use CM. For conduit fill calculation you need CM, but instead you can use NEC tables to find out how many wires (of the same...

Given formula is not appropriate to calculate wire size. It is good for calculating voltage drop. Look at the last example in the article. Calculate wire size without exceeding voltage drop. As per the calculation I (amps) comes to 172 amps for #1 wire, but as per NEC table #1 wire is good for...

Start with load current first. Minimum wire size should be 1.25 X load current, which is 1.25 x 82.5 = 103.16 amps. Which requires # 2 wire as per NEC for THHW, 75 degree centigrade wires. Then in some cases if run (distance) is very long you have to accommodate for voltage drop.

Go to www.engineerseals.com, prices are reasonable. Delaware state needs you to buy seal, before you get your certificate.

$30.00 from Marshall's.

You beat me.

32 years. Class of '79.

Map is really cool idea.

I took GA tech on line review course, I liked it. After taking course my raw score jump at least 9 points, and I pass license exam.

Quick reference manual - sold.

Hi Fed EE, I pass EIT in '92, and I pass PE in April '11. from 96 to 08 I was doing something else (non engineering). When I started studying for PE, after 2/3 weeks everything came back to me. Depends when you took review course last time, otherwise I will suggest you take some review course...

Mahmoud, Question is not frame properly. For parking lot lighting may be you want to know, how much lighting is required as per IES (Illuminating Engineering Society of North America) guideline. Your question is how much power is needed. That depends on how much lighting in foot candles is...