Rocky Mountain Chapter IAEI 2016 1 Type

Rocky Mountain Chapter IAEI 2016 • #1. Type TC tray cable approved for direct-burial and sunlight resistant is installed in a trench from a shop to a barn. At the barn, Schedule 80 PVC conduit is used to sleeve the TC cable up to a height of 10 feet on the exterior of the barn. Then the cable is strapped to the siding and runs several feet before entering the structure. Would this portion of the installation be code compliant?

Rocky Mountain Chapter IAEI 2016 #2 Vending Machine GFCI Protection Is an ATM considered a vending machine and therefore have to meet the requirements of 422. 51(A) & (B)?

Rocky Mountain Chapter IAEI 2016 #3 It is not uncommon for a (especially multi-family) 208 v 3 phase building to have at least 1 or 2 step up transformers for the elevators or roof top units. Would this generate the color coding and labeling? Most everything is in NM seems like quite the hardship

Rocky Mountain Chapter IAEI 2016 • #4. It is industry standard to use EMT fittings in bell boxes and LB’s, both indoors and outdoors. I was told by our inspector that we could only use rigid. Is this something new, is he right or should we just stay away from his jurisdiction?

Rocky Mountain Chapter IAEI 2016 #5 Is a supplemental grounding electrode required at an RV pedestal?

Rocky Mountain Chapter IAEI 2016 #6. A receptacle is installed within 3’ of a paint booth door, is it required to be explosion proof and install a seal-off ?

Rocky Mountain Chapter IAEI 2016 #7 Is it permissible to install both a 120/208 volt feeder and a 277/480 volt feeder from an industrial building to a second detached structure?

Rocky Mountain Chapter IAEI 2016 #8. Are both GFCI protection and AFCI protection required for 125 – volt, 15 - and 20 -ampere receptacles in a detached, accessory structure used as a woodworking shop?

Rocky Mountain Chapter IAEI 2016 #9 PV; Federal Pacific split bus panel. What is the maximum size back feed breaker that can be installed as one of the supply side breakers (bus is rated at 150 amps)

Rocky Mountain Chapter IAEI 2016 • #10. In a commercial kitchen is it allowable to hang cord(s) from boxes mounted above the grid for connection to appliance

Rocky Mountain Chapter IAEI 2016 #11 Overhead Conductor Support Where can we find information regarding the installation of overhead conductors and support (pole) spacing?

Rocky Mountain Chapter IAEI 2016 #12 645. 27 data centers, It has becoming a pressing matter to not have a EPO, this is allowed only if you categorize the facility a “CODS” my question is that a generator in not mandated but always installed. Is it required to have selective coordination on both systems or just normal power?

Rocky Mountain Chapter IAEI 2016 #13. We have a hot tub that has no listing mark on it, other than a CE mark. The vendor says they forgot to put the label on it at the factory and that they will put it on as soon as the manufacturer sends them one. Is this OK?

Rocky Mountain Chapter IAEI 2016 • #14; An air handler is located above a drop ceiling, and has a cord and plug connected condensate pump. Is this allowed above the ceiling?

Rocky Mountain Chapter IAEI 2016 #16 250. 142(B) allows bonding of grounded conductor in meter housings. The meters now have provisions to isolate the grounded conductor. Would this provision mandate the isolation of the grounded conductor and the equipment grounding conductors? Or has the code book not caught up with this equipment advancement?

Rocky Mountain Chapter IAEI 2016 #17. A Dominos pizza oven that is installed in the commercial kitchen (ETL listed) has 3 single receptacles that are not GFCI protected. Should the inspector require GFCI protection for 210. 8 compliance?

Rocky Mountain Chapter IAEI 2016 • #18. I’ve seen a lot of damage over the years due to surges. The NEC doesn’t have nearly the same amount of requirements for overvoltage protection that it does for overcurrent protection. How are requirements for surge protective devices changing from 2011 to 2014 to 2017 NEC?

Rocky Mountain Chapter IAEI 2016 • 19. The local utility company requires a minimum of 12’ flexible conduit for temporary construction meters. Metallic sealtight is the industry standard, 230. 43 limits the raceway to 6’ and requires a bonding jumper. Are we in compliance allowing 12’ of sealtight for a temporary installation?

Rocky Mountain Chapter IAEI 2016 # 20 Office Furniture systems have factory metal holes that the low volt computer wires are field installed through. Typically these are installed and covered with no inspection however cable shavings make it obvious that grommets are not used. Are grommets and an inspection required?

Rocky Mountain Chapter IAEI 2016 #21 To comply with transformer secondary conductors tap rules. The contractor installed a fused disconnect adjacent to the transformer that is 15’ above the floor. Is this compliant?

Rocky Mountain Chapter IAEI 2016 #22. Article 695 requires hubs to be used for raceway terminations in the controller. In 2008 the use of EMT was allowed as a wiring method. UL 514 only lists threaded hubs for RIGID and IMC. Is it permissible to install EMT fittings into a threaded hub?

Rocky Mountain Chapter IAEI 2016 • #23 Is it required to install a show window receptacle above the 6’ double doors that has a short window above it in a strip mall?

Rocky Mountain Chapter IAEI 2016 #24. When defining the area above a tub, would you include a raised tub deck? Or would it just be directly above the tub rim itself?

#25 Do the line side tap conductors on the AC side for a PV system need to be installed in accordance with requirements in article 230 service entrance conductor rules? For example do they need to installed “outside the building” per 230. 6?

Rocky Mountain Chapter IAEI 2016 #26. Can I leave the cold water ground connected to the existing panel which has now become a sub-panel where I added a new meter/main panel ahead of it? We re-fed the old panel with a 4 wire feeder and have separated the neutrals and grounds in it.

Rocky Mountain Chapter IAEI 2016 #27. Can insulation-piercing type of connectors be used for terminating the conductors in the motor terminal box of the fire pump motor?

Rocky Mountain Chapter IAEI 2016 • #28. I direct-buried 50 feet of 6 AWG Type UF Cable from the power company supplied meter enclosure to my 60 ampere, service equipment. I installed Schedule 80 PVC to sleeve the UF Cable coming up into the meter enclosure and my service equipment. The inspector failed my inspection but did not write-up the code article referencing the violation. What violation must I correct?

Rocky Mountain Chapter IAEI 2016 # 29 Junction Box Support Is it compliant to use a single all thread to support a 8”x 8” junction box?

Rocky Mountain Chapter IAEI 2016 #30 Is a PV inverter considered to be separately derived when installed as a stand-alone system? If not, why is an inverter used as part of a fuel cell system specifically required to have system grounding comply with 250. 30 when stand-alone?

Rocky Mountain Chapter IAEI 2016 #31. Is it compliant to use a Myers Hub (with locknut) on line side of service without a bond screw or bonding bushing? .

Rocky Mountain Chapter IAEI 2016 • #32 When installing four parallel runs of four 600 kcmil copper conductors 2200 feet in a direct burial trench, is it allowed to just push all the conductors into the trench as an intertwined bundle or are they to be laid out side-by-side in an organized manner per individual 4 -wire grouping?

Rocky Mountain Chapter IAEI 2016 #33. Do I have to provide AFCI protection when all I am doing is replacing an old receptacle with a new one?

Rocky Mountain Chapter IAEI 2016 #34 When aluminum branch circuit conductors are being pigtailed with copper conductors and new receptacles are installed does AFCI protection need to be provided? Is a permit required for this?

Rocky Mountain Chapter IAEI 2016 #35. Many water heaters have dielectric unions for the hot and cold connections. And most water connections at faucets are now plastic. Should a jumper be installed across the hot and cold lines

Rocky Mountain Chapter IAEI 2016 #36. A large industrial building requires four separate locations where distribution equipment is required. Is it permissible to group four Remote Control Devices (with appropriate signage) at one location outside an industrial building to shut off the four service disconnects located in different areas of the building?

Rocky Mountain Chapter IAEI 2016 • #37. Do the EMT connectors approved for wet locations meet the requirements of Article 312. 2 Damp and Wet Locations when the connectors are located in fieldpunched holes on the top of a NEMA 3 R enclosure?

Rocky Mountain Chapter IAEI 2016 # 38 Conductor Identification The recognized standard for identification of conductors when there is more than one nominal voltage present is black, red, blue and white for 120/208 voltages and brown, orange, yellow and gray for 277/480 voltages. I recently inspected an industrial application where a laser jet cutting machine came supplied with a 480 volt to 380 volt step-down transformer. What would be the industry standard for color-coding this nominal voltage system?

Rocky Mountain Chapter IAEI 2016 #39 If a fire pump is fed from a separate service as noted in NEC 695. 3(1) and 695. 6(A)(1), can the service conductors be routed outside over the roof the building?

Rocky Mountain Chapter IAEI 2016 • #40 Is x-ray equipment in a health care facility required to comply with 517. 13? If so how does 517. . 71(ex) allow for a field cord connection

Rocky Mountain Chapter IAEI 2016 #41. Are there any reliable sources for the temperature data required by 690. 7?

Rocky Mountain Chapter IAEI 2016 #42 What is the purpose of the new code addition and exception in article 705. 31? If 705. 12(A) conductors are installed per 230. 6 is the use of cable limiters still required if conductors are greater than 10’? Or was 705. 31 added to provide safety in a potential short circuit scenario when conductors are not installed per rules such as 230. 6?

Rocky Mountain Chapter IAEI 2016 #43. Is ground fault protection required for drinking fountains that have a remote compressor that is hard wired?

Rocky Mountain Chapter IAEI 2016 #44. A breaker in the main panel feeds another panel that only has room for a single or multiple OC devices for a single piece of equipment. Can this be considered a branch circuit or feeder?

Rocky Mountain Chapter IAEI 2016 • #45. Can Wiremold 6000 series be installed face up in an office building where it is installed along the full height windows for furniture feeds (it is not likely to be damaged)?

Rocky Mountain Chapter IAEI 2016 #46 Tamper Proof Receptacles We have been seeing more of the smaller assisted living facilities (Building type R 2) basically a big house with 10 - 20 bedrooms. Is it required to install tamper proof receptacles?

Rocky Mountain Chapter IAEI 2016 #47 Why is a single receptacle allowed to be non-gfci protected for a sump pump in an elevator pit (620. 85) when UL, NEMA, the CMP, and the IAEI take the position that nuisance tripping does not exist and no such allowance is made for other installations in the NEC?

Rocky Mountain Chapter IAEI 2016 #48 The 120/240 volt service to a residential property is metered at the detached garage. The inspector told me that I cannot apply the 83 percent factor in sizing the feeder from the garage to the house? Is he correct?

Rocky Mountain Chapter IAEI 2016 #49 Does a tankless type of water heater drawing just 3. 0 amperes require an individual branch circuit or can it be on the same branch circuit supplying lighting in the area also?

Rocky Mountain Chapter IAEI 2016. #50 What rating should a panel have that is located inside a well pit?

Rocky Mountain Chapter IAEI 2016 #51. Why is SER cable constructed with XHHW-2 conductors limited to the 60° column when in contact with insulation, when type XHHW-2 conductors in a raceway on the roof doesn’t have to be de-rated at all for ambient temperature?

Rocky Mountain Chapter IAEI 2016 #52. We had the cover blow off of a 5 horsepower starter. How can that be, since the starter was listed and was marked with a 65, 000 ampere short-circuit current rating, and the available short-circuit current was only 27, 000 amperes? Fortunately, no one was close by, so no one got hurt, but somebody could have been killed. What goes?

Rocky Mountain Chapter IAEI 2016 • #53. Health care facilities often use wireways for their X-ray and MRI equipment. This metal wireway goes through the floor which is a fire-rated assembly. Is there anything required more than fire caulking around the outside of the wireway?

Rocky Mountain Chapter IAEI 2016 # 54 Interrupting Rating Compliance As an electrical inspector, I am seeing contractors forgetting to comply with NEC 110. 9 until it is too late, costing them money on the job. Any suggestions?

Rocky Mountain Chapter IAEI 2016 #55. The normal system and essential systems grounding terminal buses are to be bonded together when serving the same patient care vicinity. Can you take the #10 from one panel to building steel, and then come back off building steel to the other panel?

Rocky Mountain Chapter IAEI 2016 • #56 If a generator has a 125/250 volt locking type receptacle, and when in use renders the 125 -volt receptacles un-usable, what does this have to do with whether the 125 -volt receptacles should have GFCI protection? 445. 20

Rocky Mountain Chapter IAEI 2016 #57. Are the receptacles located in a general practitioner’s exam rooms required to be Tamper Resistant (TR)?

Rocky Mountain Chapter IAEI 2016 #58 250. 114 requires an equipment ground for appliances, 250. 138 allows GFCI protection without an equipment grounding conductor. Is there a practical resolution for installer and inspector

Rocky Mountain Chapter IAEI 2016 #59. Is low volt dimming cable allowed to be tie wrapped to the MC that also feeds the light?

Rocky Mountain Chapter IAEI 2016 • #60. Why is ground fault protection of equipment not required on a 1000 -amp 480 volt grounded delta system?

Rocky Mountain Chapter IAEI 2016 • #61. A 100 a feeder is installed with EMT however both ends transition to flex or sealtight for flexibility, would it be required to install a exterior bonding jumper sized off the 100 a ocpd?

Rocky Mountain Chapter IAEI 2016 #62 Arc-flash Markings Can I use the 110. 24 -required available short-circuit current making to determine my arc-flash PPE? Some experts have told me yes and other expert have told me no.

Rocky Mountain Chapter IAEI 2016 #63. We have a commercial garage that has a sloped ceiling, is the whole ceiling classified at 18”? or just at the peak?

Rocky Mountain Chapter IAEI 2016 • #64 A separate structure has a 3 phase 50 -amp feeder, and a single phase 15 -amp branch circuit going to it as allowed by 225. 30 (D). What grounding electrode system would be required and how would it connect to the feeder and branch circuit?

Rocky Mountain Chapter IAEI 2016 #65. With new elevator systems that have all the solid state controls in the door, does the area around that door have to comply with 620. 23?

Rocky Mountain Chapter IAEI 2016 #66 What is the difference between an interrupting rating, an interrupting capacity, a short-circuit current rating, and a withstand rating?

Rocky Mountain Chapter IAEI 2016 #67. We have town houses that have fire rated demising walls between them but share a common foundation. There is a meter stack with 100 amp breakers attached at one end of the building. Does each unit require a grounding electrode and a main for the homeowner’s panel for separate structure or does the meter stack breakers and Grounding electrode at the end of the building suffice?

Rocky Mountain Chapter IAEI 2016 #68. Does the 6 handle rule, 230. 71(A), apply to the overcurrent device for a 705. 12(A) supply side connected PV system?

Rocky Mountain Chapter IAEI 2016 • #69. We have a contractor that places his Walker boxes and EMT conduit on top of vapor barrier for the slab on grade pour. He states this installation is not in contact with the earth and therefore is not defined as a wet location or corrosive area, do you concur? •

Rocky Mountain Chapter IAEI 2016 #70 Selective Coordination If hospitals are only required to coordinate down to 0. 1 seconds, why do the emergency systems in commercial and high-rise building have to coordinate for all values of available short-circuit current?

Rocky Mountain Chapter IAEI 2016 #71. Does a battery rack in the equipment room of a cell site or UPS system generate the requirements in 480. 9(E)?

Rocky Mountain Chapter IAEI 2016 • #72 We have a mixed occupancy building (part surgery center and part business) that shares the life safety panel for emergency lighting. Is it required to hard pipe the lights in areas that serve the B occupancy emergency lights?

Rocky Mountain Chapter IAEI 2016 #73. Are the rooms (office and electric room) where the door opens to a commercial garage that is classified to 18” above floor level and 18” from the ceiling maintain the same classification at 18" above floor level and at ceiling of the adjacent room?

Rocky Mountain Chapter IAEI 2016 #74 Can a 4 AWG, bare, solid conductor be installed in a PVC underground service riser?

Rocky Mountain Chapter IAEI 2016 #75. We have a 45 kva transformer installed above a lay in tile ceiling, is a light required?