good question it depends on the uses, some things you just need a energy storage set up if its not a constant use that way it has stored power with the incoming so its feeding the reserve n using off both so it doesn't drain your power n possible slow other device's down. that doesn't explain ( why increase volts ) but its a way you don't have to in some home uses.
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
Electrical conductors
Voltage Grade of cables specifies the safe voltages which the insulation of the cable can withstand.
10yrs
Below 24 volts: low voltage cables are like other cables but without so much insulation. They are made of copper and insulated with pvc, usually only one layer. They are most commonly used in cars.
The higher voltage drop in XLPE cables compared to PVC cables is due to the different electrical properties of the materials. XLPE has a lower dielectric constant and higher resistivity than PVC, leading to a higher internal resistance and therefore higher voltage drop. Additionally, XLPE cables usually have a higher operating temperature, which can also contribute to increased voltage drop.
Ribbon cables are mostly, but not always lower voltage signal carriers. Power cables are mostly larger and carry higher voltage to various parts tht need it.
Transmission power cables are designed by current carrying capacity.
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
Why is use the triangle system in high voltage cables
Induced voltage is increased
Electrical conductors
Voltage Grade of cables specifies the safe voltages which the insulation of the cable can withstand.
Ohm's Law states Voltage = Current x Resistance. Hence if voltage is increased and resistance is constant, current will increase proportionally to the rise in voltage.
Black.
10yrs
Below 24 volts: low voltage cables are like other cables but without so much insulation. They are made of copper and insulated with pvc, usually only one layer. They are most commonly used in cars.