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#69194 - 09/01/06 03:38 PM Study guides for J. tests??
Trick440 Offline

Registered: 08/15/05
Posts: 248
Loc: 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

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#69195 - 09/03/06 02:19 AM Re: Study guides for J. tests??
e57 Offline

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
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

#69196 - 09/03/06 10:34 AM Re: Study guides for J. tests??
iwire Offline

Registered: 01/05/03
Posts: 4343
Loc: 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

#69197 - 09/03/06 09:42 PM Re: Study guides for J. tests??
Larry Fine Offline

Registered: 02/18/05
Posts: 684
Loc: 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.

#69198 - 09/04/06 06:31 AM Re: Study guides for J. tests??
luckyshadow Offline

Registered: 01/04/05
Posts: 305
Loc: 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.

#69199 - 09/04/06 11:17 PM Re: Study guides for J. tests??
skipr Offline

Registered: 01/03/05
Posts: 41
Loc: 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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