2017 National Electrical Code (NEC) Significant Changes Quick-Card

Very good reference guide.

great

Very handy on the job

Quick answers for 2017 changes.

Need more computation detail on this. but it's good reference material. Quick Reference guide

If you are an professional electrician who works on photovoltaic (PV) systems or emergency systems such as hospital or nursing home backup power (transfer) equipment, this card would be a good checklist to help prevent high value code lawsuits. In health care scenarios, failure of backup systems can cost people their lives. For electrical supply shops or departments, the durable lamination of this about 6 page foldup card makes it a useful reference for the parts counter. For these clientele, this card is worth a look. It does NOT replace the NEC codebook, which for the average Joe is a pretty hard, tedious read.For HVAC (heating & cooling) people, and more general audiences who aren't going to work on the above systems, I think the more general overview or review card of the NEC from this series will be more useful. The cards in this series from Builders Book Inc are durable because of their lamination. The price of the cards is often about 15% of the cost of a codebook. Also see the images of these cards on Amazon.I have found the Code Check brand series of spiral bound laminated card to also be very useful. Amazon carries many, such as Code Check HVAC and Code Check Complete which has an electrical section. Also the Electrical Wiring Residential textbook is a useful textbook reference, as are Elec. Wiring Industrial & Elec. Wiring Commercial by the various authors Herman/ Mullin /Simmons, at typically over a $100 a crack. These textbooks are usually easier to read than the NEC codebook, which costs about the same amount.