Pull Out Fuse Box By Meter

You should be able to just pull out the pullout and check the fuses.
Pull out fuse box by meter. Put them in one by one until you find which circuit in the motorhome is causing the power drain. I pointed this out to my electrician but he still pulled the newly installed 100 amp main fuse. QitinDasen Premium 12 Way Car Blade Fuse Block Box 2 Input 12 Output Standard Blade Fuse Holder with Wire and 10Pcs Free Standard Blade Fuse for Car Boat Marine Trike 12V 24V 32V 48V 35 out of 5 stars.
1 1 product ratings - WADSWORTH 60 AMP MAIN FUSE PANEL PULL OUT FUSE HOLDER. If the battery holds its charge then the drain is something that is powered through the fuse box. The fuse carrier is what holds your main electrical fuse and can sometimes have an outer fuse case.
Being pedantic I put 2 small nylon ties through the holes on the fuse holder so kids could not pull it out. Also if you want or need to replace the meter tails to the consumer unit you must involve the electricity board who will wire them into the sealed meter. Fuse box fuse panel circuit breaker panel.
Check for 240 vac on them. If it still shows a drain then its something that has been fitted later and does not go through the fuse box. It includes a fuse puller.
A circuit breaker panel is not exactly the same as the fuse box because it has mechanical toggle-switch circuit breakers not fuses but it does perform the same function. Their dimensions are in millimetres. See diagrams below for details about which fuse to check.
Be aware that behind the cover lies energized parts. I believe that doing so is also an offence. Open the fuse box cover.