I'm planning on moving sometime early 2015 to Colorado and would like some advice on books, or online prep classes i could take to prepare for the Colorado master or jw license.

Also, I assume I can show proof of work history and hours by having my union hall submit my work hours to colorado's electrical board right or how does that work? ]]>

What is the calculated load for the ranges on this feeder? Looking for amps?

The answer provided is 88 Amps. Referencing Table 220.56.

I took the total of all 9 ranges kw at 10 kw, added them together and got 90000.

Then factored in the derating per Table 220.56 = 90000 VA X .65 = 58500 VA

Then I take 58,600 VA. and reduce to amperage by Dividing 58500/208 X1.732 (360)= 162.5 Amps

What am I missing ... As always, any assist would be appreciated. ]]>

Each floor will have 117 receptacle outlets.

What is the VA Load for the service of the building.

The Answer provided on the Test answers is 806,250 VA... I keep getting different at 525,000 VA for the Lighting.

Then for the receptacle load I get 66,000 VA.

Lighting Calculation

200 X 150 =30000 SQ. FT. x 5 Floors=150,000 SQ. Ft. Total x 3.5 from Table 220.12 For the Lighting Load. I got 525,0000 VA

Receptacle Calculation

Then Per 220.14K I tried 180VA X 117 Outlets x 5 Floors worth =105,300 Then The larger being 150,000 X 1 VA.Per Sq. FT. =150,000VA.

Now I derate The receptacle VA 150,000-10000=140000 X.40= 56,000Va

Now I add 525,000 VA From Lighting Load to 66,000 VA For the Receptacle Load. I get 591,000 VA Not 806,250 VA.

I really need to find what I'm doing Wrong...

Please any help is appreciated! ]]>

The dwelling has 1200 Sq. Ft. and the following electrical appliances that are fastened in place!

1-240 Volt 10 KVA range

1-240 volt 4800 Va clothes dryer

1-disposal 750 VA

The air conditioning is rated at 5000 VA and the baseboard heating, which is controlled by six separate thermostats is rated at 10000 VA.

I have followed my study manual and got. 19740 VA

The answer provided is 20460 VA.

I have worked this several times and I am not getting the same answer as the one provided. It is really making me second guess all I have learned regarding residential load calculations. ]]>

I found in Table 5 chap 9 using THHN. Which i'm unsure as to whether I should be using this table or whatever else could be necessary.

No such thing as a2500 kcmil per the table for sq. inch sizing so I used 1000kcmil=1.34 x2=2.65 .

Then I need the other remaining 500 kcmil for the total for my 12.5% to be calculated it is .7073

So now I have the actual size of a 2500 kcmil conductor to take 12.5% from and I get 1.34x2+.7073=3.38x12.5%=.4225

Then with .4225 I get a 300 kcmil conductor size per Table 5. Now the Test answer is 350 kcmil.

I must be doing something wrong? Any Help is appreciated... ]]>

i had some questions i could not find at all in the code book.

BTW DC is on the 2005 code.

1. something about a service riser(not service mast). what is a service riser? i could not find it

2. "relay conductors for a motor over 600 volts" in the same conduit or in its own

3. something about grounding electrode conductor sharing the same grounding electrode conductor

a. duplex

b. 3 phase service

c. DC circuit or service (forget)

d. cantremember

sorry for the vague questions im having a brain fart right now. im just glad i passed. ]]>

1/0 AWG copper conductors in a nonmetallic raceway to a panelboard located 200 ft. from a 240V, single phase power source. What's the maximum load that can placed on the panelboard without exceeding the NEC recommendation for voltage drop?

I wasn't sure, so I worked out for 2% & 3%, both answers possible options on the test. ]]>

Fire and Intrusion Detection & Alarm systems

Low Voltage & Communication circuits

? and surprisingly Lighting & General Use Equipment...not sure what happened on this area, seems like it'd be a slam dunk

I got a score of 70%, needed 75%. I scored 90% on General Knowledge, 100% on Raceways & Enclosures, 100% on Special Occupancies, 80% on OCP, 87% on Grounding & Bonding, so I feel like I'm close, but I need some good material.

I saw Mike Holts system has a low voltage section, or a Limited Energy and Communication systems, rather. I felt like I was really struggling with Hazardous locations, Fire Alarm, Power Limited, etc. I also did poorly with State Law, next time I'll actually print that one off and read it, :D:D

I appreciate your input & recommendations.

Thanks! ]]>