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House Current PowerEdit

From a house gets some of the 240VAC for HVAC (Heating Ventalation and Air Conditioning) only for the condenser units for cooling, and also 120VAC goes to the rest of the house, powering a TV, an Oven, a Microwave oven, etc.


Condenser unit for central air conditioning

A condensing unit has been turned on with 240VAC.

RK000077

240VAC watt hour meter









Commercial and Industreal PowerEdit

These ones are using 277/480VAC power, by a Three Phase Transformer, on a pad mount or pole mounted. Inside of the electical room, there is a small transformer which converts it to 240/120VAC.

1600amptrans

500kVA three phase pad mount transformer at a school.

Inverkip106800copy

Transformer room.













SubstationsEdit

A substation is a power source for step down power for Distrubution Lines, from the Transmission lines.


Full20 23544Transformer TR-16

Substation Transformer.





Electrical Substation









Transmission LinesEdit

Transmission Lines start at Power Plants, then go to Substations to distribute power though lower voltage lines. In most cases to a lower Transmission Voltages or Sub-Transmission Voltages. And sometimes straight to Distribution Voltages. Transmission Line Voltages veries to how long of a distance the line is going for or how much energy is gong to used thought the line. Transmission Voltages most commonly used are 110kv, 115kv, 138kv, 220kv, 230kv, 345kv, 380kv, 400kv, 500kv, 765kv, and 1000kv.  More rare of Transmission Voltage would be 161kv used by very little power companies.


HVTLs 00001

138kV (To the left) and 230kv (To the right) Transmission Lines.

PowerPoleDiagrams2009

Diagram of a Lattice Tower and Mono Poles



RK000079

345kV Transmission Tower














Sub-Transmission LinesEdit

Sub-Transmission Lines are between Transmission and Distrubution.



Distribution LinesEdit

Distribution lines are wooden or iron poles that have insulators, and components like for example: Transformer, or a Capacitor Bank.

Gtk-12-12-diagram

Delta Distribution Pole Diagram

RK000081

A distribution line with insulators. (10kV)


STA70130

Single phase Fused switch distribution line.


STA70134

Single Phase Fused Overhead to Underground distribution line.


STA70135

Single Phase Fused transformer distribution line.

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