Archive for category: Code change of the week

Identifying neutral conductors grouped in a panelboard or enclosure

Categories: Code change of the week

   This weeks 2014 Code change comes from section 200.4(B) which deals with neutrals grouped in panelboards or enclosures.  Then identifying them so that you don’t mistakenly disconnect the wrong one and send an over or under voltage  to a piece of equipment and possibly burn it up.  This section requires us to identify the neutral conductor for each circuit or circuits it serves.  This is for single circuit or multi-wire circuit. 

   Over the years I have seen electricians working on circuits only to disconnect the neutral to move it around to make room for another neutral conductor, only to disconnect it while the circuit it serves was still energized.  This resulted in a burnt out refrigerator or computer that was on a multi-wire circuit.

   I have seen a few good ways to ID the neutrals by either numbering them with the corresponding circuit number(s) on each neutral or grouping them with a piece of the sheath from NM cable marked with the circuit ID. 

   There are a couple of Exceptions where you can tell which neutral goes with a particular circuit of a cable or conduit installation, or when there just isn’t room to mark the wire in an existing installation where the conductors are pulled through a box or enclosure without splices.

 image

Till next time work safe be safe and keep an eye on your helper.

Jake

Low Voltage lights around a pool

Categories: Code change of the week

This question has come up several times in the last couple of weeks. How close can I put my low voltage lights near a pool?

Section 680.22,B6 allows us to install LV fixtures closer than 5’ but they have to meet 680.23, A 2  for the type of transformer that is allowed to feed the fixtures.

680.22 B(6) Low-Voltage Luminaires. Listed low-voltage luminaires not requiring grounding, not exceeding the low-voltage contact limit, and supplied by listed transformers or  power supplies that comply with 680.23(A)(2) shall be permitted to be located less than 1.5 m (5 ft.) from the inside walls of the pool.

(2) Transformers and Power Supplies. Transformers and power supplies used for the supply of underwater luminaires, together with the transformer or power supply enclosure, shall be listed for swimming pool and spa use. The transformer or power supply shall incorporate either a transformer of the isolated winding type, with an ungrounded secondary that has a grounded metal barrier between the primary and secondary windings, or one that incorporates an approved system of double insulation between the primary and secondary windings.

LV fixtures at pool

Till next time

Be safe, work safe

Jake

Annex J ADA requirements

Categories: Code change of the week

A new annex has been added to the 2914 NEC Annex J which give us some guidance when dealing with ADA requirements.

You will no longer have to hunt for the ADA requirements for electrical installations, it will be in our Code book.

ADA

Till next time be safe work safe

Jake



220.12 Electrical Code meets the Energy Code

Categories: Code change of the week

Section 220.12 the Lighting load for listed occupancies has a new exception.  It allows us to use the lighting

demands from the energy code as long as they meet the requirements of the exception.

 

220.12

Till next time be safe work safe

 

Jake

2014 Code Change 422.23 and 422.5

Categories: Code change of the week

I’m not sure how we are going to make the GFCI protective device readily accessible at a gas station, would that be to the consumer or the gas station owner.

This is a new change and its not out line considering the condition of some of this equipment.  Maybe the manufactures will start incorporating these devices into

the equipment.

 

 

422.23a

Till next Time be safe work safe

 

Jake

2014 Code Change 230.28 (B)

Categories: Code change of the week - Tags:

This weeks Code change clarifies when you use the service mast as a drop support.  It can not be attached above a coupling if there are no supports above the coupling.  Whether it is above a roof as depicted in the slide below or attached to the side of a building.  If you use the mast for attachment then there has to be adequate mechanical strength to support the drop.

SMAR

 

Till next time be safe work safe

 

Jake

2014 CODE CHANGE

Categories: Code change of the week

This weeks post is for a new 2014 Code change (December 2017 Adoption date).  Section 210.52 (G)

outlets in garages.  We will have to install one for each space, and they won’t be able to feed lights on

the outside of the garage.

210.52Gb

 

THIS IS A 2014 CODE CHANGE WHICH IS NOT IN USE AT THIS TIME. STATE OF FLORIDA IS LOOKING AT

DECEMBER OF 2017 TO ADOPT THIS CODE.

 

Till Next time be safe work safe and Merry Christmas!!!

 

Jake

Code Change missed.

Categories: Code change of the week - Tags:

This weeks Code change comes from section 210.52(E)(3) outlets on Balconies, porches, or decks.  In the 2008 Code it was required to be at 20 square feet before requiring an outlet on a balcony, porch or a deck.  In the 2011 NEC they took out the 20 square foot requirement and now mandate an outlet on any size balcony, porch or deck.

 

21052E3

 

Till next time be safe

 

Jake

110.21 (B) Field-applied Hazard Markings.

Categories: Code change of the week - Tags:

This weeks change is for field-marking our equipment out in the field.  Information that could change can be hand written based on the exception to (B)(2).  So the AIC rating or Arc Flash information that could change on a label can be hand written.  See the label below.

 

 

110.21(B) label 2014

 

Till next time work safe be safe

 

Jake

New Code Section 210.17 Electric Vehicle Chargers

Categories: Code change of the week

This is a new requirement, but only in the 2014 Code. 

21017a

 

21017c

 

Till next time be safe work safe

 

Jake