sparkyguy545
Member
Given:
120 V, single-phase 1/0 HP fan fed from 15A, 1-P CB in panelboard.
Assume supply CB has no locking means.
Fan is automatically controlled via line-voltage t'stat.
The fan has an internal maintenance switch that cannot be accessed without a ladder and removing part of the fan-shroud.
Facility service personnel do not comply with all requirements for "Qualified Persons" as defined in 70E 110.6 & 110.7.
Question: At the fan, what is required in the way of local disconnects to comply with 430.75 and430.102 in a "non-qualified" installation?
My initial opinion is that the line-voltage stat is the "controller". Since the supply CB is not lockable, then an additional disconnect that is both lockable and accessible will be necessary at the fan. At best, the switch within the housing would be readily accessible only, and therefore becomes moot.
Comments appreciated. I've searched through dozens of threads, but cannot quite find a specific response. Sorry if I've duplicated any ancient history.
120 V, single-phase 1/0 HP fan fed from 15A, 1-P CB in panelboard.
Assume supply CB has no locking means.
Fan is automatically controlled via line-voltage t'stat.
The fan has an internal maintenance switch that cannot be accessed without a ladder and removing part of the fan-shroud.
Facility service personnel do not comply with all requirements for "Qualified Persons" as defined in 70E 110.6 & 110.7.
Question: At the fan, what is required in the way of local disconnects to comply with 430.75 and430.102 in a "non-qualified" installation?
My initial opinion is that the line-voltage stat is the "controller". Since the supply CB is not lockable, then an additional disconnect that is both lockable and accessible will be necessary at the fan. At best, the switch within the housing would be readily accessible only, and therefore becomes moot.
Comments appreciated. I've searched through dozens of threads, but cannot quite find a specific response. Sorry if I've duplicated any ancient history.
