Do you think it's feasible to make up a cable with thinner wire loop across it to turn the 30A range into 300A?
We also got the A6303 Probe from tek, which can measure up to 100A.
To use it (or the 50Mhz A6302) for higher currents there´s a simple trick avaible.
A "current divider"...
Say 1:10, take 10 wires absoutely with the same length (crimped together on both sides)as a kind of link in the circuit current flowing.
Then hook the probe in one of the 10 wires and measure the current, multiply it with 10...
It´s the opposite of turning several wires around the core (this you do when you got less current flow)
To
simulate more current as you got you turn multiple wires to the core.
To
measure more current than your probe can, you use a divider.