Central Heating Wiring Diagrams
Electrical Current
Electrical tests
Central Heating Wiring Diagrams
Fuses
Electrical Circuits
Wires and Cables
Earth Bonding
Direct Current (DC)
- Produced from: batteries, photovoltaic solar panels, thermocouples, rectifying alternating current (AC)
- Thermocouples are often found in boilers
- Batteries – two dissimilar metal rods (electrodes) immersed in an acid solution (electrolyte)
Alternating Current (AC)
- Conductor is moved through a magnetic field
- 1000Ω – human's body
- I=V/R
- I=W/V
- W=V2/R
- Electronic controls for plumbing systems should be hard wired in
