Discussion in 'General Electronics Chat' started by dvn8, Jul 21, 2009.

  1. dvn8

    Thread Starter New Member

    Jul 13, 2009

    I was wondering if different types of wiring thickness, materials, etc make any effects for the voltage, amps transfer?

    Can I use very thin copper wiring for 240v or that won't work and only tranfer lot less than the desired 240v?

  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    The voltage drop depends on how much current flows in the wire.

    If the wire has a resistance of (say) 1 milli-ohm per meter then the voltage drop will be 1 millivolt per meter length of wire per amp of current flowing. If you had 10 amps flowing along a total circuit length of 10 meters you would loose 100 millivolt in total - not significant with 240V.

    You must ensure you don't exceed the current rating of the thin wire - it might overheat or fuse. There are rating tables for conductors under various conditions which you should consult.

    Also you must ensure that the circuit is safe if you mean to use bare (uninsulated) wire - the conductor must not be exposed for anyone to touch directly under normal operation - neither should it be able to make contact with any enclosed internal metallic part which has a conductive path to any exposed external metallic point.