Contract Electrician? working 14 hour days? should have told him you're a Health and Safety Inspector Trudi.
Do you know for certain that he lives with his parents? (afterall it's hardly the sort of thing you'd admit if trying to make an early favourable impression). He's clearly led you a merry dance, so if there's one thing you do know about him, is that he's more than capable of telling lies, and then telling more lies to cover the ones he's already told. Also a decent sparky shouldn't be short of a few bob, so it's not as if pleading poverty should enter the excuse book. The only thing you can be certain of is that he's hiding something, which tells me you're possibly in a position to cause him a bit of embarassment, were you ever bothered to dig a bit. In no particular order I'd say;
He's a fantasist who's spinning a persona for other peoples consumption, (possibly to reinforce his own ego/ standing if there's a third person, or peer group involved?). Couldn't discount the good old carnal motive completely, (typically it's never far away in the way we think!!!) but he hasn't gone through with it? so for what ever reason somethings gnawing away at him regarding developing the opportunity he perceives to have carved out. If I had my money on anything it would be the existance of a third person, or an outside influence. However, It could be that he's an out and out under confident of course, who's scared that he's getting himself into uncharted water, and doesn't really know what to do? but my best guess would nearer what has previously been described