Hi Justin,
A couple thoughts...
The
[URL=http://www.promasterforum.com/forum/usertag.php?do=list&action=hash&hash=7]#7 [/URL] wires supplying the 2000 watt inverter seem small.
If you are going to want to be able to use the alternator at 2000 watts, that's about 2000/12 = 167 amps. This voltage drop table says you would need something more like 2 gage depending on length of wire.
http://www.solarseller.com/dc_wire_loss_chart___.htm
The wire that connects the PM battery to the house battery (via the BludSea VCR) should be fused or breakered on both ends (ie a fuse near the PM battery and a 2nd one near the house battery). This is because both batteries are large current sources, so a short anywhere along this wire to ground can pull excessive current from either battery.
The max current for for 10 gage wire is 30 amps, but you have a 40 amp fuse in the wire from house battery to the DC fuse panel -- seems like it should be a 30 amp fuse? Is 30 amps OK for the max DC loads you expect to see at one time? That is, should the 10 gage be larger?
You might also want to check voltage drop along this wire to make sure its less than 2% for you max DC load situation (link above).
http://www.cerrowire.com/ampacity-charts
In the wiring from PM battery to house battery, you show a wire connecting the plus terminals (via the VCR), but don't show a negative wire -- that is, you are relying on the chassis grounds to care this load. I guess this is OK if you have really good chassis grounds, but if it were me, I would (and did) run a full size 2 gage wire between the negative terminals on the two batteries. Chassis grounds corrode over time and can be a real pain.
I don't claim any expertise in this stuff, so feel free to disagree
Gary