#### Tyler Cavanaugh

##### Member

- Location
- Spokane, WA

- Occupation
- Electrician

1452sqft duplex 230V/115V

9.6KW electric heat

5HP A/C 230V

1200VA dishwasher 115V

1/2HP disposal 115V

4.5KW water heater 230V

4.0 dryer

15KW range

General method

1452 x 3va x 2units. 8712

1500x 3va x 2units. 9000

Demand. 8149

1200DW x 2 x 75% 1800

1127 disp. X 2 x 75% 1691

4500wh x 2 x 75% 6750

5000 dryer x 2. 10,000

11kw x 1.15 range. 12650

9600 heat x 2. 19200

Largest M. 1127x25% 282

73172/230V = 318A

Optional.

1452sqft x 3va x 3units. 13068

1500 x 3 x 3units. 13500

9600 heat x 3. 28800

1200 DW x 3. 3600

1127 disp. X 3. 3381

4500 W.H x 3. 13500

4000 dryer x 3. 12,000

15000 range x 3. 45000

132849 X 45% = 59782VA ÷ 230V = 260A

So you would use the optional method on the master electrical exam because the optional method is smaller amps? Correct? Is this how you use 220.85 correctly?