You should inspect your ratchet straps before every single use. When it comes to hauling large equipment, remember that slow and steady wins the race. Double-check or even triple-check, that the ratchet mechanism and hooks are secured correctly. Along with that, examine the straps to make sure there are no tears or abrasions in the webbing.
If you notice any signs of wear and tear on the strap, don’t risk using the strap. After all, you are much better off spending a smaller amount of money on new ratchet straps than risking the destruction and replacement cost of whatever large item you are hauling.