7 pin connecter to generator

[almo]

Is it safe to plug my 5ver pin and a 30 amp adapter into one or two generators in parallel like the 2000 or 3000 type? Do I need any safty device?

[DmaxMaverick]

Not sure what you mean.

You can plug your shore power cord (3 pole for 30 amp, 4 pole for 50 amp, standard household plug is 15 amp) into any generator without a problem (as long as the voltage is correct). Several adapters are available at any RV store to make this a painless process. A power conditioner/distributor is a good idea to protect from brown-outs, etc, but not required. Just don't exceed the generator output capacity and it should be fine. You'll need at least a 4KW generator to run most A/C units. Larger units (15K BTU+) need more than 4KW, and that doesn't include any other appliances you might be using at the same time (like a microwave, water heater, A/C fridge, etc.). Watch out for hair dryers. They're killers! (use a LOT of juice)

Now, if you mean plugging your 7 pin RV/truck connector into the generator 15/30 amp AC outlet, NO WAY. That connector is only meant for 12V from the truck, or other 12V DC source. You can adapt the RV plug to connect to the 12V outlet on the generator, though. Just make sure the ground is good, and you get the right pole (or you'll just turn on lights or activate the brakes). The only safety device you might use is a fuse or circuit breaker to protect the trailer and generator from electrical failures. Although, it's much easier to just plug in the shore power to the generator and let the RV's power converter do the battery charging.

Only a select couple generators are capable of parallel connection, and the MFG's harness is required. In any case, once they are linked, they are used as one generator with the combined wattage (actually a little less - two 2000's have about 3800W capacity).