Demand charge coming soon to residential customers?:
1/3 of US on smart meters by 2015?
WSJ article
ESTIMATING TEMPLATES:
estimate sheet
takeoff - counts
takeoff - equipment
takeoff - length
HAZARDOUS LOCATIONS:
major repair facility - unvented
major repair facility - vented
minor repair facility - unvented
minor repair facility - vented
TRAINING:
TECHNICAL:
Generac generator sizing program
Power factor correction
3 phase 4 wire cu feeders
Motors & Transformers:
motor calculation spreadsheet
nec motor diagram
transformer ampacity
How motors are made
VIDEOS:
bird on a wire
480 volt arc flash demo
power plant substation explodes
Historical NEC:
1896 NEC
1899 NEC
1904 NEC
1907 NEC
1911 NEC