I have been doing my display for many years now and have tried probably every suggested trick to keep the breakers from kicking? Bottom-line : you can slow it down a lot but will never keep it from happening - Especially if you have a large display. The best thing I have found is to get the plug OFF the ground and at an angle so the water will shed off the plug. I found that using a 1 foot garden stake (see attached picture) does a great job. It looks like a foot long staple. Stick it in the ground, put a light clip on the stake and clip the extension cord to it. To keep water out of the plugs, I use a product that I get at Auto Zone called CLEAR RTV Silicon. (See Attached Picture) I put a thin layer for the silicon on the female plug and when I plug the male in it causes a seal to happen - keeping water out of the plug. Now, you will probably get a flood of responses contradicting my way, but that's OK. After many years of trial and error this works for me. Good luck with your display!!!!