In the bustling city of Toronto, where every detail in home renovation can add up, understanding the nuances of electrical switch positioning and the differences between 13A, 15A, and 20A outlets can lead to significant savings. Following our previous discussion on managing multiple lights with a single switch, this episode delves into the reverse scenario—operating a single light with multiple switches. We'll also explore the standard charging methods for various types of electrical switches/outlets.
Example Five (One Light, Multiple Switches):
Two switches controlling one light are calculated as 1 x 2 for the switches and 0.5 x 2 for the light, totaling 3 switch positions.
Three switches for one light are 1 x 3 for the switches and 0.5 x 3 for the light, amounting to 4.5 switch positions.
Why the need for multiple calculations for switches? It's because two-way/three-way circuits are more complex, making this method of calculation more justified.
Diving Into Other Switch Types:
Beyond the basic light switches, other types like broadband and TV switches are also counted as one switch position each. A dual socket (孖蘇) is counted as 1.5, while a 20A switch is typically 1.5 (though some may count it as 2).
Special Electrical Outlets: We'll also touch on three specific electrical installations and how to optimize their switch positioning for cost efficiency:
Water Heaters: Water heater switches (20V) are usually counted as 2 positions. Including the adjacent terminal switch face, the total for a water heater system can reach 4 positions.
Exhaust Fans: Adding a switch near the door for an exhaust fan increases the count by one. To save, consider an external switch with a built-in switch next to the fan, reducing one position.
Air Conditioners: Similar to exhaust fans, air conditioners have three common setups. Using a 20V switch for an air conditioner typically counts as 1.5 or 2 positions. Linking the air conditioner to a 13A socket or single switch (counted as 1) before adding a door switch increases the total count.
These are just guidelines and the final count depends on the agreement with your renovation contractor. If unsure about the calculations on the quote, consider having the contractor review the switch positions on-site for clarity.
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