Stacking Fuses in Parallel – Bush Fix or Bad Idea? (McLaren P1 Example)

welcome back, viewers – Lance Mechanics here. Today we’re diving into a topic that’s going to divide the internet: running fuses in parallel. From years of working in the bush and underground, I’ve seen (and done) enough “bush fixes” to know this works when you need it most. Blow a 300A starter fuse but only have 150A spares? Stack them in parallel, and in theory, the current divides – giving you the amperage you need to keep a machine mobile. Most electricians and the automotive community call it dangerous… but here’s the kicker: I found proof in a McLaren P1 hybrid battery. Instead of one giant 400A fuse, they used four 100A fuses in parallel. That’s the first real-world OEM example I’ve seen – and it backs up something I’ve been saying for years. In this video, I’ll break down: Why parallel fuses work (in theory vs reality) My real-world bush fix experience in heavy equipment Why you almost never see this in DC automotive circuits Proof that McLaren themselves used parallel fusible links in the P1 hybrid battery This isn’t about telling you to redesign circuits – it’s about understanding what’s possible in an emergency and recognizing how some OEMs handle high-load situations. 👉 What do you think? Is this safe? Smart? Or a terrible idea? Drop your opinion in the comments. 🔧 Subscribe for more real-world mechanic talk, tool reviews, and heavy equipment/automotive insights.parallel fuses explained stacking fuses in parallel McLaren P1 hybrid battery fuse bush fix automotive high amp fuses DC circuits emergency fuse repair fusible link McLaren heavy equipment electrical repair DIY fuse stacking mechanic electrical hack ⚡ This one’s going to stir debate – running fuses in parallel. I’ve done it in the bush, and McLaren did it on the P1. Would you trust this as an emergency fix, or is it asking for trouble? Comment below 👇”