I think the answer to this could come down to "whatever the AHJ wants", and I've made that call and I am waiting for them to respond...but I'm throwing it out here too.
Customer has 200A service for their single family home. They'd like to add an EVC at a 40A or 48A capacity, but they don't have the ampacity in that service to add it with the existing loads.
A big chunk of that existing load is a steam shower that they never use. Removing the steam shower would free up enough ampacity on the service to allow the addition of the EVC. What would you consider sufficient "removal" of the steam load to be, in order to satisfy the NEC?
They'd like flexibility for their future resale of the property...maybe a potential buyer likes steam, and doesn't need an EVC...well, here you go, we'll take our EVC with us, and reconnect the steam generator for you, and voila. For practical purposes, they'll never use the steam, so it's as if it didn't exist...but "we promise" is not an allowed approach in the Code.
So, for load calculation purposes, what would you all say needs to be done in order to "remove" the steam generator from the service and allow the new EVC load to be installed?
Customer has 200A service for their single family home. They'd like to add an EVC at a 40A or 48A capacity, but they don't have the ampacity in that service to add it with the existing loads.
A big chunk of that existing load is a steam shower that they never use. Removing the steam shower would free up enough ampacity on the service to allow the addition of the EVC. What would you consider sufficient "removal" of the steam load to be, in order to satisfy the NEC?
They'd like flexibility for their future resale of the property...maybe a potential buyer likes steam, and doesn't need an EVC...well, here you go, we'll take our EVC with us, and reconnect the steam generator for you, and voila. For practical purposes, they'll never use the steam, so it's as if it didn't exist...but "we promise" is not an allowed approach in the Code.
So, for load calculation purposes, what would you all say needs to be done in order to "remove" the steam generator from the service and allow the new EVC load to be installed?
- Remove the ungrounded conductors from the breaker, leave capped off and taped/labeled in panel, leave steam unit as is?
- Same as above, but also remove conductors from lugs in steam unit, cap and label in the wiring compartment?
- Remove the steam unit itself, but conductors can stay, capped and labeled in panel & jbox?
- Remove conductors completely from conduit, but steam unit can stay as is?
- Remove everything, as if it was never there?
