Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install an electric fence [title] Plan your layout. [step] How big of an enclosure or barrier do you need to create for your purposes? Consider the number of animals you need to control and determine the spacing and number of wires you need to use to install electric fencing. If you've got a particular plot set aside for your electric enclosure, take careful measurements and decide on an appropriate height for your fence.

Ending1: Not only will installation happen faster, but there will be fewer animals to control and larger, more enclosed traps under dense vegetation as well. [substeps] Consider how high you want your enclosure to be. Ending2: [substeps] Decide on the length of each run, as well as the height and the number of wires necessary to complete the job. Price the wires per foot at your retailer to get the best deal possible. Ending3: [title] Determine whether your construction needs to be a custom fence or not. [step] A custom fence or barrier will create a powerful electrical device that will kill several animals if they jump out and escape. Ending4: [title] Consider your fence's electrical effect. [step] Some electrical systems have weak electrical countersets that could cause a charge to strike the fence, resulting in a devastating shock.

Answer format: ending1/ending2/ending3/ending4