Mike Holt

Code Q&A: NM Cable Rules  2
Q. Can I pull Type NM cable in a PVC sleeve located in a ground floor slab for the kitchen counter island?
Code Q&A: Ground Rod Electrodes  1
Q. What are the requirements related to the use of a ground rod for the grounding electrode system, including sizing of the grounding electrode conductor? (Answer based on 2011 NEC.)
NEC Facts about Fire Alarm Systems 
Article 760 covers the installation of wiring and equipment for fire alarm systems, including circuits controlled and powered by the fire alarm system.
2014 National Electrical Code Changes  20
The 2014 NEC was published last month by the NFPA and is now available for all to read. Check out the key changes to this edition of the Code.
Code Q&A: Understanding Objectionable Current  1
Q. The Code prohibits "objectionable currents;" what is this, what are some examples, and how can it be prevented?
Code Q&A: Grounding and Bonding for Remote Building 3
Q. If I have a feeder to a remote building and I run the conductors in PVC, what are the grounding and bonding requirements for this particular installation?
Stumped by the Code? Requirements for Identifying the High-Leg of a 3-Phase, 4-Wire Connected System 1
Q. What kind of marking does the Code require to identify the high-leg of a 3-phase, 4-wire delta connected system?
Interconnected Electric Power Sources 1
When a facility has more than one power source, what must you do to maintain a safe operation? Article 705 answers that and other questions related to using power sources that operate in parallel with a primary source.
Code Q&A: Handhole Enclosure Requirements
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A: Disconnect Requirements for Ungrounded Conductors
Your most pressing National Electrical Code (NEC) questions answered
EV Charging Systems 1
Applying NEC rules for installing equipment and devices related to electric vehicle charging stations
Code Q&A: Lighting Requirements in Storage Spaces 1
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A: Receptacle Rules in a Kitchen Island 2
Your most pressing National Electrical Code (NEC) questions answered
Air-Conditioning and Refrigeration Equipment
Applying Art. 440 for sizing branch circuit overcurrent protective devices, branch circuit conductors, and motor overload protection for hermetic motors

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