Untitled Quiz

Study Notes

The difference between the nominal operating current and the maximum current a component can safely handle.
Purpose: To prevent overheating or overloading, which can lead to component failure or fire hazards.

Essential in preventing accidents, ensuring system reliability, and extending the lifespan of electrical components and systems.
Provide a buffer for unexpected conditions and maintain safety standards.

Electrical components should be able to handle maximum stress during faults, even under worst-case scenarios.
This is important when the main protection fails and backup systems are activated.
Examples of fault tolerance capabilities include an Uninterruptible Power Supply (UPS), backup generators, and battery backup systems.

Known for their higher energy density, longer lifespan, and faster charging capabilities.
More expensive but offer better performance.

Produce chemical energy by mixing two dissolved chemical constituents separated by a membrane.
They use liquid electrolytes and are well-suited for large-scale energy storage.
Flow batteries have a long cycle life and can be scaled up easily.

Emergency lighting systems are backup lighting setups that activate automatically when the main power supply fails.
Types of emergency lighting include standby lighting, escape route lighting, and open area (anti-panic) lighting.
Automated lighting controls automatically manage lighting factors based on time, occupancy, and daylight levels.
Types of automated lighting controls include occupancy sensors, timer-based systems, and smart lighting systems that integrate with home/building automation systems.

These types of lighting use less electricity to produce the same or better light compared to traditional bulbs.

Grounding provides a direct path for electrical current to flow into the earth, ensuring safety by stabilizing voltage levels and preventing electric shock.
Its primary role is to:
- Protect people from electric shock.
- Stabilize the electrical system.
- Prevent unwanted voltages.
- Prevent electrical fires by diverting fault currents safely.
Surge protection protects electrical equipment from transient overvoltages caused by external events like lightning strikes, power surges, or electrical switching.

Critical for safety, equipment protection, system reliability, and compliance with regulations.
They protect against lightning strikes and help maintain a stable electrical system.

Earth Grounding (Direct Grounding) provides a direct path for electrical current to dissipate into the earth during faults or surges.
Equipment Grounding protects people from electrical shock by ensuring metal parts of equipment do not become live during a fault.
The National Electric Code (NEC) requires ground to be driven at least 8 feet into the earth for adequate grounding.

Include different types of systems such as split systems, packaged systems, ducted mini-split systems, ductless mini-split systems, boiler systems, and hybrid heat pump systems.

Essential in an HVAC system for providing warmth during cold weather, maintaining comfortable indoor temperatures, and ensuring energy efficiency.
These components include:
- Furnace: The primary heating unit in most HVAC systems, generating heat distributed through ducts.
- Heat pump: Transfers heat from outside air or ground into the building. Can also be reversed to provide cooling in warm weather.
- Boiler: Heats water for distribution through radiators or in-floor heating systems.

Essential for maintaining optimal HVAC system efficiency and performance.
Includes filter replacement, coil cleaning, fan inspection, damper and actuator maintenance, and humidity control.
Ductwork maintenance includes cleaning, leak testing, insulation inspection, and duct sealing.

They automate HVAC functions by utilizing input data from sensors and coordinating actions of other equipment occurring simultaneously.

Consists of the following key components;
- Head-end Computer/Software: Also known as a workstation, front-end, or energy management software.
- Network Infrastructure: Supplies network to stations through ethernet cables.
- Controllers: Connected to the network infrastructure and provides a means for monitoring and/or controlling end devices.
- End Devices; Include sensors that measure the value of a variable.