How does everybody here size the cable for home standby generators? Here's the situation... A customer called me for a Generac generator. He has already installed #3 TECK cable (along with the control cable) from where the generator will sit, to the house. I believe that the OESC, CEC and NEC all agree that this cable is rated for 100 amps. If it's a continuous load, you're not supposed to exceed 80% or 80 amps. The customer wants the biggest generator he can get on this cable.
Generac says:
16kW - Max rated load of 66.6A, protected by a 70A breaker
20kW - Max rated load of 83.3A, protected by a 100A breaker
22kW - Max rated load of 91.7A, protected by a 100A breaker
Which generator would you choose?
Thanks
