Would you consider the breakers that are installed on some AHU (air handling unit ) as a means of disconnect
?
Would you consider the breakers that are installed on some AHU (air handling unit ) as a means of disconnect
?
I have a fairly new unit and on the air handler there is a breaker. There is a label above the breaker that states it is only a means of disconnect and not OCPD.
That means it is not a breaker, it is a molded case switch.
Allow me to muddy the water a bit
Some of the AHUs I have inspected have a plastic cover over the
breaker/disconnects you reference. The cover is held closed by a screw.
Is this an acceptable disconnecting means ?
Some of the AHUs I have inspected have a plastic cover over the breaker/disconnects you reference. The cover is held closed by a screw. Is this an acceptable disconnecting means ?
My answer is yes to both. The disconnecting means is required to be "readily accessible." The definition of that phrase tells us that we have to be able to reach the disconnecting means quickly. But it does not tell us that we have to be able to operate it quickly (e.g., as an emergency shutoff).If the branch circuit breaker is within sight but behind a panel door with a latch or lock it is still acceptable for same purpose so why not?
I have been told you can use the unit provided circuit breakers as the required disco, and I have been told you can't.
Never failed inspections useing them as a disco.
Reading 240.10 kinda gets me to thinking that it would be okay for disconnect but not for ocp.
My answer is yes to both. The disconnecting means is required to be "readily accessible." The definition of that phrase tells us that we have to be able to reach the disconnecting means quickly. But it does not tell us that we have to be able to operate it quickly (e.g., as an emergency shutoff).