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Study guides for J. tests?? #69194
09/01/06 06:38 PM
09/01/06 06:38 PM
Trick440  Offline OP
Joined: Aug 2005
Posts: 248
Waterford, MI, USA
Any good websites for wire derating, conduit fill, motors and transformers? Tutorials or something...

Especially derating & conduit fill. I remember that, and basic 3 phase ohms law was the most predominant when I took the J test.

Trying to help a buddy.

Shake n Bake
Work Gear for Electricians and the Trades
Re: Study guides for J. tests?? #69195
09/03/06 05:19 AM
09/03/06 05:19 AM
e57  Offline
Joined: May 2003
Posts: 2,876
Derating and conduit fill are right in the code book. And most other calculations can be found in an Uglys.

Mark Heller
"Well - I oughta....." -Jackie Gleason
Re: Study guides for J. tests?? #69196
09/03/06 01:34 PM
09/03/06 01:34 PM
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
If you don't know "Uglys" is a good book every electrician and apprentice should have.

You can get it here or most major book stores have it along with many supply houses.

Bob Badger
Construction & Maintenance Electrician
Re: Study guides for J. tests?? #69197
09/04/06 12:42 AM
09/04/06 12:42 AM
Larry Fine  Offline
Joined: Feb 2005
Posts: 693
Richmond, VA
Mopar man, how about just coming up with a few scenarios for your friend to calculate numbers for, such as a made-up house or two, a couple of industrial machines and feeders, etc?

Larry Fine
Fine Electric Co.
Re: Study guides for J. tests?? #69198
09/04/06 09:31 AM
09/04/06 09:31 AM
luckyshadow  Offline
Joined: Jan 2005
Posts: 315
Maryland USA
You might want to go to
There are practice tests at that site plus a world of information and study guides for sale.

Re: Study guides for J. tests?? #69199
09/05/06 02:17 AM
09/05/06 02:17 AM
skipr  Offline
Joined: Jan 2005
Posts: 39
Huntington Beach, Ca.
The Illustrated guide to the NEC is good as well as Commercial Electrical wiring. Both available at Mike Holt, like luckyshawdow said.


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