Mike Holt

Don't Let Voltage Drop Get Your System Down
Contrary to common belief, the NEC generally doesn't require you to size conductors to accommodate voltage drop. It merely suggests in the Fine Print
Code Q&A
The answers to your NEC quandaries
Code Calculations
The ampacity of a conductor as listed in Table 310.16 is based on the conductor operating at an ambient temperature of 86ºF (30ºC). When the ambient temperature
Code Q&A
The answers to your NEC quandaries
Motor Calculations Part 2: Feeders
What’s the correct way to size motor feeders and related overcurrent protection?
Code Quandaries
Stumped by the Code?
Motors, Motor Circuits, and Controllers, Oh My! 1
Don’t be intimidated by the largest chapter of the NEC
Installation and operation of optional standby systems
With last year’s blackout still lingering on the minds of many, the use of optional standby power systems is worth a closer look.
Motor Calculations Part 1: Motors and Branch-Circuit Conductors 1
Overcurrent and short-circuit protection aren’t the same for motors
Cords and Fixture Wires
Correctly applying the requirements of Art. 400 and 402 can prevent serious problems
Code Quandaries 2
Stumped by the Code?
Art. 300: Wiring Methods
After a small engine plant began experiencing severe power quality problems and the subsequent investigation showed the wireways weren't electrically
Stumped by the Code?
Q. How close to a shower stall or hydromassage bathtub can I install a switch? A. You can't locate switches within the wet location of a tub, shower space,
Code Calculations
The NEC requirements for sizing and installing boxes, conduit bodies, and fittings help prevent damage to conductor insulation during installation and
Art. 240: Overcurrent Protection
Art. 240: Overcurrent Protection
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