What is the amp breaker required
The tankless water heater requires a 60 amp breaker
Is this 120 or 240 volt?
The Rheem RTE 13 is a 240 Volt tankless water heater.
Can we install in basement for whole house application?
Yes, it can be installed in your basement for use with applications within your house however 4 GPM might not be sufficient for multiple applications.
Is this Rheem RTEX13 made in the U.S.A.?
Rheem manufactures their tankless water heaters in China