Well a few thoughts... Perhaps they are going over the second strand but are still well below the third. A 32 inch gap is pretty significant. Is it very dry? You may not be grounding well. Is the fence powerful enough to really deter them? Their fur can insulate them from a fair amount of electricity and fencing for wild animal detterance needs to be stronger, generally, than that used for domestic animal containment. Are there any weeds touching, sort of "diluting" the effect o the electricity?
Those are the things I would look into to start with, good luck!

I would add that you water under the fencing for a few days and water the ground pole well.

I use 6 inches for the lower wire and 12 inches for the next wire. I don't have need for the third wire. I have not had any issues with rabbits defeating this wire spacing, except when/if the lower wire is grounded by weeds or grass. However, squirrels will routinely pass under the 6 inch wire so lowering the bottom wire to 3 inches is necessary to keep them out. My fence charger is a constant 1300 V charger.

Probably because they want to eat your lettuce and stuff?......:)

First of all, pnbrown, it's a given that they want to eat up what's inside my garden. No critter would endure my wrath without an excellent reason.

Wayne and sunnibel--the ground both under the wire and at the grounding rod is thoroughly wet. We got a nice rain last night and this morning I chased a rabbit out. I checked the whole fence with my tester and register about 5000 volts on all wires at all locations. That's enough to get my attention when I get too close. I don't understand why it doesn't get theirs. No weeds or grass touching to gound it out.

Grandad-- I originally only had the 36" wire (for deer) and a wire about 2" off the ground. I watched two rabbit go under that lower wire so I thought that I would lower it and add the middle wire a little above it. Maybe I need to raise the middle one a little.

Anyone had any luck with using Milorganite to discourage rabbits and other varmints

Lol, Pat. I am so often tempted to answer thread titles with a joke, too. (When will my garlic be cured? When you take it to the doctor!) Anyway, sounds like the wire spacing needs some adjusting. Fur can be very insulating, which might be why they don't seem to notice the fence as much as we do. It's one of the reasons they suggest baiting fences for deer, to be sure there is good contact with a sensitive part. Good luck!

I have pet rabbits and I have seen them jumping over fences as high as 15". The hind legs of wild rabbits are probably even stronger. So, a four inch high danger zone is probably nothing to them. Is it possible for you to add a fourth wire between the second and third ones?

It seems that these are lazy rabbits and want to go UNDER the wire rather than jump over it. After I watched them go under the wire is when I decided to drop the bottom wire and the middle one down just a little.

I've been thinking about switching the middle wire to a ground wire and add another above it with minimum spacing between. That way if they decide to try to jump between the two I'll get them even if they have no feet on the ground at the time they go through.

I'm perplexed. Not sure why or how you would have rabbits going underneath a 2 inch above ground wire spacing with an active 5000 Volt charged fence. My 1300 V fence charger has done a great job keeping out raccoons which are much larger than rabbits.

I've been in the garden twice today and no rabbits. Do you think the critters finally realized that I was serious?

DW gave me a Stealth Cam for Father's Day & I've yet to get it mounted at the garden. I've had all the above issues of fence vs critters over time & though I've stopped the rabbits, the coons continue to get my corn. I've got seven strands & a very hot fencer. I plan to use the camera to develop my next line of defense against the coons.........

Better get that camera mounted, my corn is starting to silk!

I fought the same problem mostly with squirrels and ground hogs for years. I finally put up 24" woven wire (1x2) and buried the bottom 6 inches in the ground. Then I ran 2 electric wires. One about 1" below the top and the other about 2" above the top. Then I have a single wire at about 48" for the deer. I haven't had a problem since. I do have to pull a dead squirrel off the wire every so often. I really enjoy that. Oh I use a SACO I 1200V fence charger. $28 at local farmer's co-op.