A customer wants me to install a transfer switch to power his residence during a power outage. I read article 702 since I have never installed an optional standby system. I have some questions and would like to get the usual tips, tricks, and pics guide for romex jockeys.
It will be a manual transfer switch with a portable generator. Does this make it a separately derived system or nonseparately derived system per 701.11?
The residence's 200amp indoor panel box has a main breaker which is used as the disconnect. It is connected directly to the exterior meterbase. The meterbase is 320amp so there is also an indoor 125amp panel box with another main breaker which is fed separately to the meterbase.
The customer would like to remove the service wires from the 200amp panel and reroute the them to a transfer switch, then they would be routed on the load side of the transfer switch back to the 200amp panel and also to (something) that will connect to the generator. Now comes another question.
What comes to my mind is a pigtail with a male plug to stick in a generator receptacle. This doesn't sound good to me. The generator probably (?) won't have lugs to attach a flex line like you might connect to other equipment. (tips, tricks, pics)
Looks like according to 702.6 exception I wouldn't need audible or visual alarm or lights.
A separate equipment ground wire other than the one that would be routed with the pigtail flex cable to the generator would be a good idea, mandatory?
Looks like the disconnect at the 200amp panel and one on the generator all located close together will be enough disconnects?
Did I miss something?
thanks in advance.
It will be a manual transfer switch with a portable generator. Does this make it a separately derived system or nonseparately derived system per 701.11?
The residence's 200amp indoor panel box has a main breaker which is used as the disconnect. It is connected directly to the exterior meterbase. The meterbase is 320amp so there is also an indoor 125amp panel box with another main breaker which is fed separately to the meterbase.
The customer would like to remove the service wires from the 200amp panel and reroute the them to a transfer switch, then they would be routed on the load side of the transfer switch back to the 200amp panel and also to (something) that will connect to the generator. Now comes another question.
What comes to my mind is a pigtail with a male plug to stick in a generator receptacle. This doesn't sound good to me. The generator probably (?) won't have lugs to attach a flex line like you might connect to other equipment. (tips, tricks, pics)
Looks like according to 702.6 exception I wouldn't need audible or visual alarm or lights.
A separate equipment ground wire other than the one that would be routed with the pigtail flex cable to the generator would be a good idea, mandatory?
Looks like the disconnect at the 200amp panel and one on the generator all located close together will be enough disconnects?
Did I miss something?
thanks in advance.
