pfactor2
Member
- Location
- United States
Increasing 200 amp service to accommodate 48KW in tankless water heaters.
Total demand after calc is 287 amps.
Using a 400amp rated meter/ main with two 200 amps breakers to two interior panels. Generally I’ll install GEC to two ground rods and exterior cold water hose bib continuous with whatever size table 250.66 calls for. No hose bib near the service. I figure by 250.66 I need a 1/0. I am considering running the 1/0 to the water heater in garage, and just a #6 bare to the two ground rods. Any thoughts on code compliance.
Total demand after calc is 287 amps.
Using a 400amp rated meter/ main with two 200 amps breakers to two interior panels. Generally I’ll install GEC to two ground rods and exterior cold water hose bib continuous with whatever size table 250.66 calls for. No hose bib near the service. I figure by 250.66 I need a 1/0. I am considering running the 1/0 to the water heater in garage, and just a #6 bare to the two ground rods. Any thoughts on code compliance.