Electrical Questions? Ask an Electrician Online.
Trying to answer a question for my electrician on a job that has apparently never wired up an Ansul system before; he currently has it wired correctly in so much as the lights and electric go off under the hood when activated, but how does a signal get back to the VFD controlling the exhaust fan to ensure that the fan activates in the event of a fire?
**Update** maybe I figured this out on my own, would I run power to the N/C contact on the microswitch and then connect that to the line running from the on side of the on/off switch that is running up to the VFD?
Amazing what you can figure out when you actually take the time to sit down and draw it.