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Motor Disconnect Required? | Information by Electrical Professionals . . . Hello all, I work for an OEM and we are a UL508A shop We follow UL, NEC, NFPA79 codes Out of practice, we always put a motor disconnect within sight of the motor My question is, is there such a rule code that a motor disconnect is required for such motor disconnect or is the main
Split A C Systems and Local Disconnect Requirements When the indoor unit of a split-system A C unit gets power from the outdoor condensing unit, does the indoor unit require a local disconnect switch if the outdoor unit has a lockable disconnect switch?
local motor diconnects required per UL NEC? | Eng-Tips A local push button, lockable or not, is not acceptable It is not a controller disconnecting means per the definition in 430 81 (A) since it does not interrupt “motor current ” I’m fairly familiar with these requirements I was on Code Making Panel 11, during the 1996 NEC Edition and I’ve regularly been part of the ongoing debates
NEC motor disconnect exception | Information by Electrical . . . Per NEC section 430 102(B)(1) requires a Motor Disconnect A disconnecting means must be located in line of sight from the motor location and the driven machinery location Per my design, the MCC switchgear and the motor equipment were in the same location, so we met the requirement per
Disconnecting means - appliances | Information by Electrical . . . For the 2011 NEC, the disconnecting means of appliances (article 422 part III) section breaks up the disconnecting means of permanently connected appliances into three sections: A) < 300 VA or 300 VA C) Motor operated appliance and > 1 8 HP My first question is what are examples of
Disconnecting Means | Information by Electrical Professionals for . . . Sometimes the local articles have more requirements for disconnecting means But I think most of them require that the disconnecting means be within sight of the item There are some exceptions where a breaker locking device can be used (e g some appliances in article 422) if the breaker is not within sight of the item
NEC Issue - Local Disconnectors | Eng-Tips The basic rule is that there be a disconnect within sight of the controller and another disconnect within sight of the motor Many facilities provide both in spite of NEC exceptions that eliminate need for local disconnect at the motor under certain conditions
Disconnecting Means | Information by Electrical Professionals for . . . New inspector here in the state of WV just curious on a couple of things We have adapted the 2020 NEC My first question is, does a new service on a commercial building require the outside emergency disconnect? My other question is that the code states for the emergency disconnect for one- and