brother
Senior Member
There was a discussion about having a 'bypass' for the elevators that are fed off a shunt trip breaker.
So far I have not found a NEC 2008 code violation. The reason they want to install the shunt trip breaker in a bypass equipment is if the shunt trip goes bad(coil etc.) or malfunction then in an emergency situation they can 'bypass' this breaker and feed the elevators so they use them while the breaker is getting ordered or replaced. Of course when they actually do the work of replacing the breaker it will have the power off to the elevators.
So are there any code issues that are a concern here??
Just in case your wondering there is a another 'main' breaker that feeds this shunt trip breaker that is about 7 floors up, so the conductors will be protected regardless.
So far I have not found a NEC 2008 code violation. The reason they want to install the shunt trip breaker in a bypass equipment is if the shunt trip goes bad(coil etc.) or malfunction then in an emergency situation they can 'bypass' this breaker and feed the elevators so they use them while the breaker is getting ordered or replaced. Of course when they actually do the work of replacing the breaker it will have the power off to the elevators.
So are there any code issues that are a concern here??
Just in case your wondering there is a another 'main' breaker that feeds this shunt trip breaker that is about 7 floors up, so the conductors will be protected regardless.