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Re: A/C Service Disconnect
If the disconnect for the condenser unit is in the electrical service equipment/panel next to/near the condenser unit, then, no, it does not require a separate disconnect at the unit.
Installing a disconnect "on" the a/c unit, condenser unit or air handler unit, is virtually a no-no as the disconnect 'is not allowed' to be on a panel which is removable for service, repair, etc.
When speaking of residential a/c units, there are few, if any, 'non-removable panels' which cannot be removed to allow for service, repair, etc.
When speaking of large commercial units, yeah, there are typically large areas which have fixed in place panels and on which the disconnect 'is allowed to be' mounted, however, most of those guys know that they do not want to work on/replace a unit which has a disconnect on it, so the disconnect is almost always mounted nearby.
Breakers located elsewhere (not near the unit) are not allowed to be used as the disconnect, not even when there is a breaker lock-out device installed (with one exception, which only applies to industrial processes in which the equipment is a necessary part of that industrial process).
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