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These remote devices are not listed for use as service disconnecting means, as required by 230.66. It should be noted, however, that shunt trip devices do not guarantee that operating the remote device will actually disconnect power to the building. Without power to these remote devices, the shunt trip devices would fail to operate.
not to shunt trip the breakers feeding the elevator. The shunt trip process is controlled by the Smoke and Heat detectors installed in the elevator shaft itself tied to the shunt trip breakers, not from the auxiliary contacts in the elevator service disconnect. Someone more knowledgeable about such will probably chime in. JAP>
A 3 phase 208 200 amp shunt trip breaker being used as a main service disconnect, best location to get the 120 volts to engage shunt?
So 210.8(B) is a new addition to the NEC with a bit more stringent requirements on GFCI uses in Commercial Kitchens. I am curious how to meet this requirement and provide the requirement to disconnect power to equipment under a kitchen hood upon activation of the fire or ANSIL system. Has...
It has nothing to do with the shunt trip (in my experience). Shunt trip required only if sprinkler in the shaft or machine room. I've seen a few traction type. Some have disconnects in an adjacent control room. They should still have a disconnect at the motor. I have not heard of one with an integral disconnect. You may still need a fused ...
Unless you used the shunt trip to power the coil on a set of contactors. Then a simple push button could be used to trip the breaker and open the contacts. Looks like the best bet is to run everything through an electrically held, normally open contactor with a push button.
You can have another disconnect in the main service room (obviously something has to supply the elevator disconnect) but you can't have THE only disconnect in the main service room. I don't believe having a shunt trip in the main service room is allowed either, but again, I don't know a specific code reference.
3) if there are "HEAT PRODUCING" electical items under the hood I disconnect those with a shunt trip breaker activated via the ANSUL system. Like an electric fryer, electric grill, etc. 4) I do NOT disconnect general purpose receptacles that supply refrigeration power, timer power, or other non-heat generating electrical items that are under ...
At the rear of each building is a break glass button labeled "Normal Power Disconnect" and, in some cases, a second labeled "Emergency Power Disconnect". These buttons operate a shunt trip on the main service breaker(s) and generator output breaker(s) respectively. Here in Indiana, we drag our heels on adopting new codes.
Why am I monitoring that there is shunt trip power available when I am getting that shunt power from a control transformer in the elevator disconnect? Whenever the elevator guy shuts down the disconnect (or the shunt trip does it's job) I get a supervisory alarm.