This is our recommendation as the manufacturer. Check local codes for compliance if necessary. Tankless water heaters are considered a non-continuous load.
2
Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
3
Requires a minimum of 200 A main service.
4
Requires a minimum of 300 A main service
5
29/Pro 29 & 36/Pro 36 may be wired for balanced 3-phase 208V. 15/Pro 15, 20/Pro 20, 24/Pro 24 may be wired for unbalanced 3-phase 208V.
DHE 12
612446
single
Hz
50/60
V
208
240
kW
9
12
A
44
50 2 x 26 2 x 30 2 x 35 2 x 40 2 x 44 2 x 50 3 x 35 3 x 40 3 x 44 3 x 50