generally speaking...no. the only time that you can accurately use RLA is under design conditions, which you rarely have...RLA stands for Rated Load Amps. if you are operating at the rating conditions then yes you can.
How to make the perfect "Half-Hitch" knot or any other boyscout knot in 3 easy steps...
1. Remove your meter leads from the meter and very carefully return them to their storage case or bag.
2. Wait 2 seconds
3. Very carefully remove your meter leads from their storage place and enjoy your new knot!