Originally Posted by Whiplash
to trip a relay?
i just got my blue sea fuse block that i'm basically using for switch power. Just wanna make sure i can use 18ga (bundled, color coded) for easy wire runs. This will run to switches (from OTRATTW) which will be used to trigger relays (30 or 40a depending on requirements) powered straight from battery to lights etc.
Am i good with 18ga wire and say 5a fuses? or will i be pushing more current that will require larger wire/higher fusing
If you are only using the 18ga wire to trip the relay through terminals 85 and 86 on the relay, from the switch, you will be good to go. The 5 amp fuse will be enough to also have a lighted switch.
Larger gauge wire and fuses are needed to power your accessory using terminals 30, 87, and 87A depending on how you wire the relay.