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Be careful to look for the shaded letter

Electric signs are not always illuminated.

This luminaire was field evaluated after the inspector noticed that it was not listed.

Plug and play ceiling fan. Push up and twist lock it in place.

The window above the show window is also included when determining the required receptacle spacing for a show window.

A structure is &ldquo;that which is built or constructed, other than equipment&rdquo;.

Acceptable equipment may be new, reconditioned, refurbished, or remanufactured.

This is a &ldquo;listed&rdquo; or &ldquo;certified&rdquo; industrial control panel used in conjunction with power factor correction equipment.

Conductors normally used to carry current shall be of copper or aluminum unless otherwise provided in this Code.

Inspectors may ask to see a certificate of calibration for the torque tool used to make final terminations.

The new marking requirements apply when a 1200 amp or larger electric service is installed at other than dwelling units.

Comparison of Table 110.26(A)(1) in the 2014 NEC and 2017 NEC.

This equipment above the suspended ceiling is likely to be examined while energized and therefore requires proper working space. Are there any other issues to be concerned about in the image?

Open conductive rails on a traveling crane are considered &ldquo;live parts&rdquo;.

Even though testing companies generally test GFP devices while the equipment is de-energized, the GFP test required in 230.95(C) does not fall under the jurisdiction of new section 110.41.

Code references listed in Table 210.3 can modify or amend the requirements in article 210 even if the illustration in 90.3 says otherwise.

Grouping can be accomplished by cable ties or similar means in at least one location within the panelboard or other point of origination.

If the red dashed line measures 6 ft. or less, the receptacle will need GFCI protection.

Here is a tamper-resistant, weather resistant, hospital grade GFCI receptacle with an end of life indicator.

GFCI protection now required for crawl space lighting outlets rated 120 volts or less.

At least one 120-volt, 20-ampere branch circuit shall be installed to supply receptacle outlets in attached garages and in detached garages with electric power.

AFCI protection is now required for all 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets and devices installed in guest rooms and guest suites of hotels and motels.

An exception allows a branch circuit extension up to a 6 ft. to remain without the need to install AFCI protection, as long as no additional outlets or devices are installed.

Because these fixed cabinets have a countertop, they are considered &ldquo;wall space&rdquo; and receptacles are required.

In the 2014 NEC, the peninsula was measured from the connecting edge. In the 2017 NEC, the peninsula is measured from the wall. Each undivided peninsula requires at least 1 receptacle.

This two-car garage has two vehicle bays and requires a receptacle in each bay.

The service receptacle is only required for indoor electrical services.

Wall switch controlled lighting outlets are now required in dwelling unit kitchens.

Let&rsquo;s hope that both dimmer switches provide the full range of dimming control at each location, otherwise &ldquo;Z&rdquo; might not make it safely to the bottom of the stairs.

If this crazy bunch of guest speakers had a floor receptacle to plug into, maybe the gal on the floor would still be on her feet.

If the same overhead conductors were actual service entrance conductors instead of feeders, what would be the minimum required distance above the roof of building A?

Metal support structures used for service conductors over a roof must be bonded.

The section containing the neutral disconnect link must be marked.

Don&rsquo;t forget about additional standard sizes for fuses which are listed in the parent text of section 240.6(A).

The High Pressure Contact (HPC) switch from GE provides an Arc Flash hazard mitigation solution for large frame fuses.

An instantaneous trip feature must be less than the available arcing current. This is usually ensured by an analysis to determine the arcing current.

The building or structure grounding electrode system shall be used as the grounding electrode for the separately derived system.

Pool rebar is not to be used as the grounding electrode system for the electric service.

Interior metal water piping used to extend a GEC connection to an electrode must be electrically continuous with a metal underground water pipe electrode.

The hold-down bolts can be connected to the concrete-encased electrode by welding, exothermic welding, the usual steel tie wires, or other approved means.

A similar code change occurred in 250.86 for other than service raceways.

In the 2017 NEC, two different methods are permitted for bonding communications systems.

In the 2017 NEC, bonding jumpers shall be of copper, aluminum, copper-clad aluminum, or other corrosion-resistant material.

FMC cannot be larger than trade size 1 &frac14; inch if using the raceway as the equipment grounding conductor.

All equipment grounding conductors in the gutter must be joined together.

A wire type equipment grounding conductor of a circuit passing through the box is not required to be connected to the box.

New footnotes (a &amp; b) are special allowances for listed low-voltage lighting systems.

In the left image, the EMT was installed to protect the conductors but what was protecting the EMT?

PVC raceways are not the only type that could benefit from an expansion fitting. This rigid metal conduit expansion fitting was needed on the roof to compensate for thermal expansion. Go to <a href=

Some examples of plenum rated nonmetallic cables include type CMP, CL2P, CL3P. See NEC Table 725.154 and Table 725.154(A).

Once the final ambient temperature has been determined, use NEC Table 310.15(B)(2)(a) or Table 310.15(B)(2)(b) as applicable.

Now, 208Y/120-volt electrical systems serving one-family dwellings and the individual dwelling units of two-family and multifamily dwellings are also included in the provisions of NEC 310.15(B)(7).

Article 312 does NOT apply to equipment operating over 1000 volts unless specifically referenced elsewhere in the NEC.

If this panel was fed with 1 AWG aluminum conductors, 2 inches of wire bending space would be required for deflection.