line loss charts

Line loss / voltage drop table

Volt drop tables
which show the allowable distances for a specific wire size and current, can be used for small currents or for long distances. Using the volt drop table wires can be sized for specific runs. Example # 8g wire ()or larger) must be used for currents of 10 amps in wire runs of 44 feet ( 14 metres).

If you are using a voltage different then 12 volt DC you can still use the Volt drop table.

Simply multiply the distances by 2 for a 24 VDC system, by 3 for a 36 VDC system, and by 4 for a 48 VDC system. Example: #8g wire may be used for currents up to 10 amps for a distance up to 176 feet (44x4) or 55 metres in a 48 VDC system

Volt drop tables are good for generalized wire sizing, however for distances and high currents such as occurs between the battery, source centre and inverter then we recommend using "ohm's law".
Electrical Equations:
there are two basic equations in electricity, the first states that:
Power(watts) = current(amps) x Voltage(volts)
thus a 10 amp turbine charging a battery at 48 volts has a power of 480 watts. (10x48).
the second equation is:
Ohm's Law:
Voltage (volts) = current(amps) x resistance(ohms)
Ohm's law is good for measuring the loss of voltage over the length of a wire.
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