G2
Estimation of connected load and
diversity factors
Estimation of Connected Load and Diversified Load for domestic premises
Type of load
G2
196
Assumed connected load
Typical
diversity factor
[see notes 3
and 7]
Lighting
• sum of wattage of all luminaries or assume 100 W
for each lighting point (except chandelier points)
• chandelier lighting points – 500W • 1.8 x lamp wattage for fluorescent lighting
13A socketoutlets
• 1,000 W for first socket-outlet plus 200 W for
remainder socket-outlets (including kitchen ring
circuits), [see note 2]
50%
Kitchen power
points
• kitchen appliance connection points - assume
1,500 W each or actual rating of appliance (e.g.
washing machine, dryer, dish washer etc)
• cooker – assume 3,000 W or actual rating of oven
plus the largest ring
• fridge – assume 300 W or actual rating
50%
Other power
points
• water heater – 1,500 W or actual rating
• motors (e.g. lifts) – actual rating
50%
Air conditioning
• split air conditioning units – full rating
• window air conditioning units – full rating • central a/c units, (see note 2)
90%
75%
Note 1:
the Connected Load values shown above are based on typical Appliances
and connection points. Specific site information should be used where
available.
Note 2:
the Connected Load (and cable rating) for Circuits supplying socket-outlets
should be based on 1,000 W for the first socket-outlet, plus 200 W for the
remainder, where a double socket outlet is counted as 2 (e.g. circuit rating
for 5 x double socket-outlets = 1kW + 9 x 0.2kW = 2.8kW).
The Electricity Wiring Regulations (Revision 1)