jar546
Forum Coordinator
Again, any Romex questions please refer to Chris Kennedy. He wrote the book on Romex.So no ROMEX was used or harmed in this photo?
Again, any Romex questions please refer to Chris Kennedy. He wrote the book on Romex.So no ROMEX was used or harmed in this photo?
The bottom fitting needs a bushing, the back chase nipple does not.300.4(G) Insulated Fittings. Where raceways contain 4 AWG or larger insulated circuit conductors, and these conductors enter a cabinet, a box, an enclosure, or a raceway, the conductors shall be protected by an identified fitting providing a smoothly rounded insulating surface, unless the conductors are separated from the fitting or raceway by identified insulating material that is securely fastened in place.
Exception: Where threaded hubs or bosses that are an integral part of a cabinet, box, enclosure, or raceway provide a smoothly rounded or flared entry for conductors.
Conduit bushings constructed wholly of insulating material shall not be used to secure a fitting or raceway. The insulating fitting or insulating material shall have a temperature rating not less than the insulation temperature rating of the installed conductors.
Does that apply to the bottom connector and the rear chase nipple?
So what exactly did the voltage have to do with the violation? Ya know, there’s a lot of cranial vibration associated with riding a motorcycle.
The following exception would seem to support your position:The bottom fitting needs a bushing, the back chase nipple does not.
The point of this was that sometimes inspectors write up violations that are not violations such as identification of voltage for this 208/120 with color code when there is no other voltage present in the building. What is good practice and what is a code violation are two different things. I basically trolled my own forum to generate a good conversation and it worked.
Worked well. Do it again.I basically trolled my own forum to generate a good conversation and it worked.
I see 3 "Hots", a green ground and NO NEUTRAL W/O the neutral, How can it be 120/208 ?OK, I've let this fester long enough (on purpose to drive conversation) There are a few things to digest on this one.
1) This is 208/120V 3-phase for an RTU
2) The voltage is not marked because the entire building is 208/120, therefore they don't have to comply with NEC 215.12(C)(1)
3) The chase nipple in the back is compliant
4) The bottom connector IS missing a bushing due to the size of the wire. See NEC 300.4 - The only violation in this pic
5) No bonding bushing is required on the bottom because it is 208/120V
I don't see any other issues. Do you?
As much as we would like to see tape used to identify the ungrounded conductors, we cannot require it. That is the main point. I recently had an inspector write this up when, in fact, as much as it was a great idea and practice, it was not required.
It only serves line-to-line motor load for the RTU, so no neutral is used or required. Kinda like a 240 volt residential water heater, you don't bring a neutral to it because it doesn't need one, you hook up two 120 volt wires from opposite phases and power it that way.I see 3 "Hots", a green ground and NO NEUTRAL W/O the neutral, How can it be 120/208 ?
It's 208V only, you are correct.I see 3 "Hots", a green ground and NO NEUTRAL W/O the neutral, How can it be 120/208 ?
I very saldom quote myself but I asked a question in regards to the lugs being connected by a nut and washer that didn't look right to me in the pic. I recently viewed a newer siemans disconnect and noticed that they make the lug connections with a screw, so as Rosanna Rosanna Dana sez....Never mind!So the code violation is "not installed in a workman like manner" or was there a modification to the connections using a nut and washer instead of lugs?
I think I see 250 Amp Fuses in the pic. Looks like the main cabinet, right after the service , or at least it is a Pretty big Feeder, so if this goes to a panelboard that has ALL THE RTU's or motor loads that don't need a Neutral, then I guess I can see that. But just for One RTU makes it pretty damn bigIt only serves line-to-line motor load for the RTU, so no neutral is used or required. Kinda like a 240 volt residential water heater, you don't bring a neutral to it because it doesn't need one, you hook up two 120 volt wires from opposite phases and power it that way.
20 ton RTUI think I see 250 Amp Fuses in the pic. Looks like the main cabinet, right after the service , or at least it is a Pretty big Feeder, so if this goes to a panelboard that has ALL THE RTU's or motor loads that don't need a Neutral, then I guess I can see that. But just for One RTU makes it pretty damn big
Don't doubt your word, Just has me scratching my head is all I am saying
Then, Probably a Heat Pump with Electric coil back up heat for 250 amps20 ton RTU
No heating elements in this one. South Florida temps.Then, Probably a Heat Pump with Electric coil back up heat for 250 amps
Just RealizedI think I see 250 Amp Fuses in the pic. Looks like the main cabinet, right after the service , or at least it is a Pretty big Feeder, so if this goes to a panelboard that has ALL THE RTU's or motor loads that don't need a Neutral, then I guess I can see that. But just for One RTU makes it pretty damn big
Don't doubt your word, Just has me scratching my head is all I am saying