Sat lurking here for ages and finally got round to registering. Be gentle with me as I am a UK spark [35+years] but don't understand half of the USA terms used on here, sorry.
Anyway, 3 swa's into a 4" box [could even be 3"], nice job! Bet it is a sight inside the box with all its rust. Hate to say it but fairly typical of Mobile home parks. The ones that we used to work on were dissed [water and elec] by the shifters and the soil pipe removed by virtue of the flat-back driving off site and pulling the pipe out of the ground so that any residual contents could 'self drain'...mmmm nice!