I have a generac RXSW200A3 transfer switch. The customer wants it mounted inside, recessed in a 2x6 wall finished with sheetrock. It will protrude out a 1/2" from the sheetrock when finished to access cover. Inspector said this is not allowable because it does not have factory knockouts and a flush mount cover. The installation manual states it can be inside, but must be mounted vertically to a rigid structure. Closest I can find in code is 314.20 Flush Mounted installation...shall not be set back more than 1/4" , shall extend to finished surface or extend past. Figured it would come down to manufacturer listing, but nothing out right allows or prohibits it. 2020 code cycle. Thoughts?
transfer switch
- Thread starter jabschc
- Start date
Seven-Delta-FortyOne
Goin’ Down In Flames........
- Location
- Humboldt
- Occupation
- EC and GC
I have not mounted one in such a way, but I'm curious about the factory knockout deal. What's the Code citation?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Definitely not allowed due to what code section? Unless this is a fire rated wall what difference does it make if its recessed?
first time also, generac installation manual says you are allowed to add knockouts where needed. No code citation.
No code reference. Only thing I can figure is they said generac makes one with a flush cover, that has the 20/40 breaker slots under it. So I'm guessing they just aren't sure and since they make another one for this application, that this one is not permitted. Again just speculating. Wanted to get some information together before really pressing the issue.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Inspector is off his meds. No idea what he thinks the no factory KO's or cover has to do with anything.
I agree, they usually go to the "I interpret it this way, and if you don't, we won't pass it"
There is one thing that may have a bearing on part of the issue.
I recently installed a non-service rated Generac TS and was surprised that it has no dead-front. It has the outer 3R cover with thumbscrew but no interior cover. I contacted my Generac dealer and found that is the standard for that switch and they (Generac) have a letter explaining why as there have been rejections on that issue.
This was the reply:
The UL1008 Standard for Transfer Equipment does not require a dead front cover on transfer equipment is not equipped with a readily accessible disconnecting means. The UL 1008 Standard does require that the live parts be guarded against unintentional contact, and this is accomplish with the transfer equipment enclosure cover on non-service rated transfer equipment. Please note that Generac does not manufacture a dead front cover for any model of non-service rated transfer equipment, and the field installation of a dead cover on any listed non-service rated transfer equipment would be considered a field modification by UL. I have included a letter from the Generac Director of Engineering, Transfer Switches on the UL 1008 requirements and a copy of the UL certificate of Compliance for Generac manufactured optional standby transfer equipment.
I recently installed a non-service rated Generac TS and was surprised that it has no dead-front. It has the outer 3R cover with thumbscrew but no interior cover. I contacted my Generac dealer and found that is the standard for that switch and they (Generac) have a letter explaining why as there have been rejections on that issue.
This was the reply:
The UL1008 Standard for Transfer Equipment does not require a dead front cover on transfer equipment is not equipped with a readily accessible disconnecting means. The UL 1008 Standard does require that the live parts be guarded against unintentional contact, and this is accomplish with the transfer equipment enclosure cover on non-service rated transfer equipment. Please note that Generac does not manufacture a dead front cover for any model of non-service rated transfer equipment, and the field installation of a dead cover on any listed non-service rated transfer equipment would be considered a field modification by UL. I have included a letter from the Generac Director of Engineering, Transfer Switches on the UL 1008 requirements and a copy of the UL certificate of Compliance for Generac manufactured optional standby transfer equipment.
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LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I installed a pair of them above a air of 200a panels that way with no problems.
No cables showed at all, and I applied trim around both of them, very clean.
No cables showed at all, and I applied trim around both of them, very clean.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Can't surface mount it either - how you going to enter with raceways/cables if no KO's
This inspector is smarter than you think
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
I have installed one in that manner. Not even a 2nd glance from the inspector!
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
Yes, we talked about fishing!State Inspector ??
Did he get out of his car ?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Why did he need to get out of the car to talk about fishing?
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
To look at the boat in the garage, why else?
PaulEd
Member
- Location
- United States
Can you upload a picture of this install?