87creepin 255 Posted March 1 Report Share Posted March 1 Hey guys I'm trying to hardwire in a radar detector but I have an inline 2a glass fuse with holder (22awg) And an add-a-circuit that requires a fuse (with 16awg) I have a 5A blade fuse for the add a circuit with 2A ordered, but I'm wondering if I can just wire in with a 5A in the add-a-circuit and 2A from there and have no problems? My uneducated guess is I'll be fine because as soon as more amps than 2 flow through itll blow the weaker fuse. Quote Link to post Share on other sites
DB8-TypeR 4,476 Posted March 1 Report Share Posted March 1 I think I understand what you are explaining, basically that you will have 2x fuses supplying one device? A 5A fuse supplying a 2A fuse. There isnt anything wrong with that other that a bit OTT but due to the parts you have on hand why not. 1 Quote Link to post Share on other sites
sr2 1,242 Posted March 1 Report Share Posted March 1 I'm struggling to understand your question but with two unequal value fuses in series the lowest value will be the fuse that breaks the circuit and when in parallel it will be the highest. Quote Link to post Share on other sites
Muncie 11,038 Posted March 2 Report Share Posted March 2 All good as is 5a protects wiring 2a protects your device. Bang it in. Quote Link to post Share on other sites
87creepin 255 Posted March 2 Author Report Share Posted March 2 Cheers guys Quote Link to post Share on other sites
sr2 1,242 Posted March 3 Report Share Posted March 3 23 hours ago, Muncie said: All good as is 5a protects wiring 2a protects your device. Bang it in. Sounds like they are in series, if so the 5 amp fuse won't protect anything. (i.e. the 2 amp fuse will always blow first!). Quote Link to post Share on other sites
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