Residential load calculations single dwelling

Calculating the correct service size for your duplex dwelling is difficult for ensuring safe and efficient electrical distribution. Our easy-to-use calculator simplifies this process, helping homeowners and electricians accurately determine the electrical load requirements.

HEXAGON SERVICES
SERVICE SIZE CALCULATION FOR DUPLEX DWELLING RESIDENTIAL UNIT
AREA CALCULATION (Rule 8-110) Unit AREA (sqft) Sq m
Ground Floor and upper floor living space excluding basement Sq ft 3270 303.8
Basement Sq ft 1350 125.4
TOTAL Sq ft 4620
METRIC UNIT Sq m 429.2
LOAD TYPE AND RULE REFERENCE
BASIC LOAD — 8-200(1)(a) (i)&(ii) STEPS Watts Remaining Multiplier
First 90 sq m 90 5000 214.0 1
Next 90 sq m 90 1000 124.0 1
Next 90 sq m 90 1000 34.0 1
Next 34 sq m 34 1000 0.0 1
Next 0 sq m 0 1000 0.0 0
Next 0 sq m 0 1000 0.0 0
Next 0 sq m 0 1000 0.0 0
BASIC LOAD TOTAL 304 8000
Percentage Total (W) No of devices Watts per equip
Electric Heating load/Central AC 8-200(1)(a) (iii) 100% 3600 1 3600
Electric Range 8-200(1)(a) (iv) 6KW Plus 40% of excess of 12KW 100% 6000 1 6000
Tankless water heater, hot tubs, pools, steamers 8-200(1)(a) (v) 100% 0 0 0
Electric Vehicle Charger 8-200(1)(a) (vi) 100% 0 3500
Any other load in excess of 1500W 25% 0 0 0
Cloth Dryer 25% 0 3000

GRAND TOTAL 17600 Watts
Residential voltage level 240 Volts
Ampicity 73.3 Amps