Service Disconnect distance of application

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rossielectric

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I set a 3 phase 480 volt 600 amp overhead service to feed two 200 HP pumps. My 600 amp fused disconnect is within sight of the pump, has lock-out tag capabilities. Also, kills power to starter controls and everyone has to be trained in lock-out tag procedures.

The electrical inspector wants service disconnect within 25 ft of pump. The distance between my disconnect and pumps now is approximately 80 - 100 feet.

Does my application meet 2008 NEC requirements for NOT installing a service disconnect closer.?
 
rossielectric said:
My 600 amp fused disconnect is within sight of the pump,

The electrical inspector wants service disconnect within 25 ft of pump. The distance between my disconnect and pumps now is approximately 80 - 100 feet.

Does my application meet 2008 NEC requirements .
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2008 Article 100 Definitions: In sight from (within sight from, within sight)
where the code specifies that one equipment shall be " in sight from", "within sight from", or "within sight of" and so forth, another piece of equipment, the specified equipment is to be visible and not more than 15 meters ( 50 ft) distant from the other.

So even though you can see it, it's not " in sight of " .
 
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I agree with Growler.

The disconnecting means required by 430.102 are required to be "within sight" which would require that it be located not more than 50' from the motor.

Chris
 
Does he want the service disconnect within 25' of the pumps or just a disconnecting means within 25' of the pumps?

Coincidentally, I just built a service on a stanchion to feed 2-200HP 480v motors plus a couple of 5HP's. The disconnects at the stanchion are roughly 150' away, but in site of the bale grinding machinery. I haven't been finaled yet, but I don't think my inspector is going to take issue with the install.
 
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430.102
Motor disconnect "within sight of" the motor as Growler and Raider1 have pointed out; but also within sight of the driven machinery which often gets overlooked.
Controller disconnect "within sight of" the controller.
If the controller disconnect doubles as the motor disconnect then it must meet all the motor disconnect requirements including LOTO capability, sight, and distance.

dcspector said:
I am trying to follow this but when would 430.102(B) exception come into play?
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430.102(B) Exception
The only thing important here is part (a). Impracticable (sp?) should be answered with laughter, ridicule, shame, and an instruction to try harder. Additional or increased hazard are a real concern; check twice.
As to part (b) this comment is humorous in itself. Either you have a standing staff in which case you have to meet all those conditions or you don't have a standing staff. With a staff you must have standards in place such as NFPA79 that deny the exception. Without a staff you can't use the exception. Either way, part (b) is of no effect.
 
pfalcon said:
430.102
Motor disconnect "within sight of" the motor as Growler and Raider1 have pointed out; but also within sight of the driven machinery which often gets overlooked.
Controller disconnect "within sight of" the controller.
If the controller disconnect doubles as the motor disconnect then it must meet all the motor disconnect requirements including LOTO capability, sight, and distance.



430.102(B) Exception
The only thing important here is part (a). Impracticable (sp?) should be answered with laughter, ridicule, shame, and an instruction to try harder. Additional or increased hazard are a real concern; check twice.
As to part (b) this comment is humorous in itself. Either you have a standing staff in which case you have to meet all those conditions or you don't have a standing staff. With a staff you must have standards in place such as NFPA79 that deny the exception. Without a staff you can't use the exception. Either way, part (b) is of no effect.
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Hey thanks for your interpretation reply. If a controller is not within sight and cabable of being lock in the open position.....???? Then hey there hot rod have (b) removed.
 
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