chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
I may have an issue. I have 10 residential units that call for water heaters with 5kw elements. Service is 208y/120.
I get as per 422.13:
5000?208=24.038A
24.038?1.25=30.047
Units are wired in NM. As per 334.80 I see 30A in the 60?C column of T310.16 for #10 NM.
Slightly over the allowable ampacity of the 10/2 mn that is installed.
Am I mistaken?
I get as per 422.13:
5000?208=24.038A
24.038?1.25=30.047
Units are wired in NM. As per 334.80 I see 30A in the 60?C column of T310.16 for #10 NM.
Slightly over the allowable ampacity of the 10/2 mn that is installed.
Am I mistaken?