Electical Contractor

PVC Conduit Underground, Disconnect for Residentia

| June 2003

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Systems

210.70 Lighting Outlets Required The National Electrical Code states its purpose as “the practical safeguarding of persons and property from hazards arising from the use of electricity.” [90.1(A)] The adequacy of the Code is covered in 90.1(B).

Article 210--Branch Circuits: Required Lighting Outlets

| June 2003

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Systems

CODE CITATIONS Article 210 Branch Circuits Article 220 Branch Circuit, Feeder and Service Calculations Article 250 Grounding Article 352 Rigid Nonmetallic Conduit: Type RNC Article 422 Appliances Article 430 Motors, Motor Circuits, and Controllers Article 514 Motor Fuel Dispensing Facilities Article

Storage Tank Water Heaters, Grounding Electrode Conductor Connections and More

| May 2003

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Your Business

210.70 Lighting Outlets Required Article 210 specifies provisions for all branch circuits except for branch circuits supplying only motor loads. Article 430 contains motor load requirements. Provisions stipulating the placement of receptacle outlets are covered in 210.52 through 210.63.

NM Cables Installed in Temporary Installations

| May 2003

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Your Business

CODE CITATIONS Article 210 Branch Circuits Article 220 Branch Circuit, Feeder and Service Calculations Article 250 Grounding Article 334 Nonmetallic Sheathed Cable: Types NM, NMC, and NMS Article 422 Appliances The General Information for Electrical Equipment Directory published by Underwriters Labo

Mark C. Ode

| May 2003

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Systems

Article 305 for temporary wiring in the 1999 National Electrical Code has been relocated to Article 527 covering temporary installations in the 2002 NEC.

Grounding-Electrode Conductor Taps, Design B Energy-Efficient Motors and More

Branch Circuits--Required Receptacle Outlets, Part XII

| April 2003

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Your Business

CODE CITATIONS Article 230 Services Article 250 Grounding Article 404 Switches Article 408 Switchboards and Panelboards Article 430 Motors, Motor Circuits and Controllers Article 645 Information Technology Equipment

More than Just a 'Gas' Station

| April 2003

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Your Business

210.63 Heating, Air-Conditioning and Refrigeration Equipment Outlet Article 210 specifies provisions for all branch circuits except for branch circuits supplying only motor loads, which are covered in Article 430.

April 2003

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Codes & Standards

The NEC changes to account for new fuels

Supplying Emergency Lighting, Swimming Pool Pump Motors and More

Branch Circuits--Required Receptacle Outlets, Part XI

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Codes & Standards

CODE CITATIONS Article 110 Requirements for Electrical Installations

Motor-Operated Appliances

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Codes & Standards

210.62 Show Windows Requirements specifying the placement of receptacle outlets are covered in 210.52 through 210.63. The majority of these provisions pertain to dwelling units.

Mark C. Ode

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Systems

Article 422 of the 2002 National Electrical Code covers electrical appliances used in dwellings, commercial facilities and some industrial installations. Many appliances utilize only electrical power.

Checks and Balances

Marilyn Michelson

Bonding the Hot-Water Piping System

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Your Business

If you’re involved with security systems (procurement, design or installation), this article looks at what market segments they may fall in and where you can go to learn more about the “standards” that apply to a product or its installation.

February 2003

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Residential

A simple change in construction and plumbing methods over a period of years may have resulted in many water-piping systems being inadequately bonded to the electrical system.

Aluminum Wire Terminations, Oversize Distribution Panels and More

Article 210 - Branch Circuits: Required Receptacle Outlets, Part X

| February 2003

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Systems

CODE CITATIONS Article 110 Requirements for Electrical Installations Article 215 Feeders Article 220 Branch Circuit, Feeder and Service Calculations Article 250 Grounding Article 400 Flexible Cords and Cables Article 404 Switches Article 430 Motors, Motor Circuits and Controllers Aluminum wire termi

| February 2003

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Systems

210.52(H) Hallways Article 210 covers branch circuits except for those supplying only motor loads. Motor-load requirements are covered in Article 430. Receptacle-placement provisions are stipulated in 210.52(A) through (H).

Code Question

Article 210 - Branch Circuits

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Systems

Question: I know you have addressed the practice of using 15 amp rated conductors for switch legs in residential 20 amp lighting circuits. I still have electricians saying it meets code. Will you try again? Thanks, Don Stephens Answer: Thanks for your comment Don.

A Quick Means of Egress - Necessary Updates To 2002 Code

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Your Business

* For reference figures, please refer to ELECTRICAL CONTRACTOR magazine. 210.52(D) Bathrooms Requirements pertaining to receptacle placement inside and outside dwellings are covered in 210.52(A) through (H).

Mark C. Ode

Underground Wiring To A Post Lighting, GFCIs in Commercial Kitchens and More

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Codes & Standards

It is extremely important to provide a safe and clear means of egress from electrical equipment and to ensure a worker’s ability to quickly exit an area during an electrical explosion and fire. The 2002 National Electrical Code (NEC) has added some necessary requirements to provide that safety.