The most important factor to consider when selecting the proper cable size is how well it can handle the needed current load in your installation setting without generating an excessive voltage drop from the supply voltage. Here are some of the conditions that will influence the eventual cable size you choose once you know the load that the cable will carry (Ampere). The considerations listed below may lead you to a different recommended conductor size. The key is that the minimum conductor size you choose must at the very least be the smallest cable size that can cover all the circumstances you've investigated.
