Note, however, that cables with a 60° Celsius rating on the insulation are not allowed to be installed in engine compartments! In this case, we recommend that you leave the setting at the 60° Celsius (140☏) setting to be on the safe side. In other parts of the world, this is unfortunately not always required. In the US, this should be printed on the conductor's insulation. The next setting is the temperature rating of the conductor's insulation.If you want to, you can also set a custom value. For less important loads you can also set it to 10%, but we recommend to start with the 3% setting and only change it if the required wire sizes become excessive. The maximum voltage drop is preset to 3%, which is required for safety relevant devices.Now we set the system voltage, which on boats is typically either 12 or 24 Volts in a DC system and 120 or 230 Volts in an AC-system.This should be written on the back of the devices or found in their data sheets. We can choose either Amps or Watts as the unit. Now we set the maximum total load of the consumer(s) that are connected to the conductor.For the ISO-Version we have preset this to meters, for the ABYC version to feet. This cable run has to include the length of the positive and the negative wire! We can choose the unit for the length between meters or feet. First of all we need to set the length of the total cable run from the battery to the consumer and back, or, in some cases, the point of connection of the circuit (for example, a circuit breaker in the main panelboard).
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