Whatever fan you have decided to use, perhaps best to check the manufacturers advice on the selection of an appropriate fuse.I note that Richard advised that the fan in his post runs at 12.4 amps and if that fan might be selected a 30 amp fuse would perhaps risk creating a similar situation to the failure of fan and wiring you have already experienced..! .
Good post Luddite! The internet had had the same experience as I. For example,.https://forums.jag-lovers.com/t/fuse-rating-exceeding-manufacturers-specification/374193 Of course this is for the High-Output SPAL Fan (and SPAL) owners have found best. The smaller SPAL fans, mid-strength, can use 30amps and even, perhaps, less potent wires and relay: BTW, I have learned to use the lowest amperage I can in any task. If you're leery, merely try a lower amperage fuse while carrying a spare and also a more potent fuse as a precaution. In this way I went from 20s
to 40s.
.
Key point in your case is the strength of the relay as well. The standard SPAL fan relay is 40 amps as is the HELLA relay posted earlier. The HELLA (a very fine relay from Spain) is considerably less expensive as it can be purchased separately. However, the SPAL fan relays are sold as part of a complete kit with fuse holders and potent wiring which is safer decision for amateurs. BTW, I avoided a long length of odd heavy duty wiring by simply connecting the POWER into the relay from the nearby alternator. The relays "trigger" (my terminology), which is an earth to the.rad fan switch at the bottom of rad and/or a bypass at the dash...though in your case the last can be a toggle switch anywhere you can reach from your spot at the steering wheel.
Lorne
ADDENDUM: I had a later thought a researched it. I was thinking how I liked the HELLA design combining the fuse and the relay together in a compact whole. Then that concerned me. Research confirmed that the posted model has them melt together. If riri has one like it could explain what happened to him. Google it. "
can a HELLA relay & fuse combination melt" It should not be used. Pity.
