Heating, Ventilation, and Air Conditioning is commonly known with the term HVAC. Other acronyms not so frequently used to depict air conditioning and heating uses is HVACR (heating, ventilation, air conditioning, and refrigeration) and HACR (heating, air conditioning and refrigeration). These systems include small refrigerators, air conditioners, heaters, very large systems which maintain temperature and comfort factors in large commercial buildings.
The main rationale of a Heating... Read Full Story
Installing an outdoor light is a good practice especially if you have a wide compound where some areas can be really dark during the night. This can be a security issue. To install a outdoor light will involve some digging as the wires will have to be run underground and the light pole will have to be planted. Refer to the diagram below.
As in installing any lighting circuit, there are always the live and the neutral wire coming from the source which can be the Mains Distribution panel... Read Full Story
Previously I have written about how we go about doing the electrical layout for multiple light points using individual switches to control each light separately. However there are many instances where we want the convenience of switching on all the lights in certain part of our premises all at once. This is especially so when we are using down lights or flush-lights in our dining hall or living room. Most of the time we have at least 4 lights switched on together. This can be achieved by... Read Full Story
The fluorescent light remains one f the most poplar form of lighting despite the many advancements made in recent years. Though many other more fanciful forms of lighting fixtures have been gaining popularity, fluorescent lights have remained strong in the market due to it’s relatively cheap price, readily available parts and easy maintenance.
Like usual, I won’t be dwelling into long technical explanation on how and why the fluorescent light works and confuse you with all the technical... Read Full Story
I guess lots of you still uses the old fashioned fan speed regulator like the one you see above. These speed regulators works with a copper coil as resistance to regulate the amount of current passing through to the fan. There is of course the speed dial ranging from 1 to 5 or sometimes 0 to 5 where 0 means it fan is switched off with no current passing through. 5 would mean all the current passes through offering no resistance at all. At speed level 5, the fan will be running at full... Read Full Story
Say you have a room that has only a single light point or maybe a dining hall that you feel is not bright enough. You can always add in an additional light without too much trouble and you don’t even have to mess with the Main Switch Panel.
Wiring Diagram 1- Shows you how the existing light point’s wire is typically installed. The live wire goes to the switch and the neutral wire to the existing light. In short you have everything that is needed to light up another light right here. The... Read Full Story
Say you have a room that has only a single light point or maybe a dining hall that you feel is not bright enough. You can always add in an additional light without too much trouble and you don’t even have to mess with the Main Switch Panel.
Wiring Diagram 1- Shows you how the existing light point’s wire is typically installed. The live wire goes to the switch and the neutral wire to the existing light. In short you have everything that is needed to light up another light right here. The... Read Full Story
The main purposes of a HVAC Supply or Heating, Ventilation, and Air-Conditioning (HVAC) system are to help maintain good indoor air quality through adequate ventilation with filtration and provide thermal comfort. HVAC systems are among the largest energy consumers in schools. The choice and design of the HVAC system can also affect many other high performance goals, including water consumption (water cooled air conditioning equipment) and acoustics. Potential for Natural Ventilation and... Read Full Story
The main purposes of a HVAC Supply or Heating, Ventilation, and Air-Conditioning (HVAC) system are to help maintain good indoor air quality through adequate ventilation with filtration and provide thermal comfort. HVAC systems are among the largest energy consumers in schools. The choice and design of the HVAC system can also affect many other high performance goals, including water consumption (water cooled air conditioning equipment) and acoustics. Potential for Natural Ventilation and... Read Full Story
Previously I have written about how we go about doing the electrical layout for multiple light points using individual switches to control each light separately. However there are many instances where we want the convenience of switching on all the lights in certain part of our premises all at once. This is especially so when we are using down lights or flush-lights in our dining hall or living room. Most of the time we have at least 4 lights switched on together. This can be achieved by... Read Full Story
