Light it. Or I could have said 'turn it on' but that would have required an 'Easy Boys!' so I did not write it that way. Saves time.....
How much current is 'available' in a circuit makes no difference because it is the voltage that 'drives' (literally) the current. For example, all around your house you have many different lamps and light bulbs that are all different wattages but they all have at least 15 amp circuit breakers. A 100 watt bulb 'draws' or uses less than 1 amp of current (voltage X current = wattage..... close enough for our purposes) and yet you can put it on a 15 amp, 20 amp or even 100 amp breaker and it will not allow any more current (amps) to flow than the voltage 'driving' that current, all of which is 115 volts at your house. Well, at least it was before you bought that ape hangar, no idea what it might be now.....
The reason the fuse is opening (again, I could say blowing but.....) is because there is more than 30 amps of current flowing in that circuit, and through the fuse. Take out the fuse and replace it with an incandescent lamp and current will flow through that, which will then 'light up'. Makes it very easy to see when you find the problem; take fuses out of individual circuits and if one of them is the problem, the instant you remove the fuse, the light will go out (no more current flowing to light the bulb). It really is a great way to diagnose the problem in this case and I can say that 'cause it was not my idea.
Brian
Yeah, but if the current is enough to blow a 30amp fuse immediately, what's it going to do to the bulb?