What kind of control do you have? Two wire? Four wire? Five wire?

 

It is a 27 kw Generac generator and a generac 150 amp transfer switch
The transfer switch works on 6 wires to control generator
from what I know two wires are to start the generator [ Low voltage ] ???
Two are power from generator [ 240v ] to hold coil when generator is running
I think one is for battery charger ????
Going to pull a manual from a old generator I installed to see what the last wires are for
Any help will be greatly appreciated
Don

 

hope this hlps
http://www.zillerelectric.com/forums...&d=1343776079]

 

I ran into this with a 20k Generac. Two transfer switches for two services in same building. I only used the one after trying to use both. Problem using both is you have to have the phases correct "N1 and N2 connections" or you create a dead short. Lucky for me i only blew the fuses before i realized my problem. I replaced the fuses in one transfer switch and left the fuses out of the other.

Not sure being 3 phase and the N connections as i have never done a 3-phase transfer switch but the N connections being out of phase was my problem. I swapped the phases around but still opted to keep one set of fuses out since both transfer switches still worked.

 

What I would do is use N1 from one switch, and N2 from the other switch, making sure it is on another leg. That way, if a breaker trips for either panel, it will start the gen and transfer both. If you use N1/2 from only one, if the breaker trips for the other, the gen won't know. If tripping breakers is not an issue, use N1/2 from one or the other, and parallel the 194, 23 and 0. If this is a three phase gen, take T1 from either switch.

Logic would tell me that if one breaker trips, and you had the N1/2 paralleled, the fuses would blow, because N1/2 would be trying to power the side that tripped. This may not be the case if there are some relays involved, but I cannot be certain. Just brainstorming.

 

It is 1 phase generator with service entrance transfer switch so no breaker will trip
Does generac have a wiring diagram for this

 

paste this intgo a google search SIB11-28-NALL.
this will take you to a PDF zillerelectric click and open and it has the wiring diar=gram. A relay is needed.

 

View attachment SIB11-28-NALL.pdf

 

Thanks iggy you are the best