I've had 3- 78 Royales. All had two A/C units. The latest one I totally gut=
ted. I found that all 110 volt wiring was 12 gauge. Each roof vent had a 10=
gauge wire ( 30 Amp ) for A/C units. I helped a friend add a second A/C t=
o his Royale in his roof vent. The wire was there. Pull the inside roof ven=
t trim out. There should be some wires tucked back between the foam insulat=
ion, and the ceiling plywood. Every one I've had. Was set up so that one A/=
C unit ran only from the generator. The other ( front I believe. And that=
was the higher BTU unit. Outside cover is higher ) . ran from shore power.=
In, or around your breaker panel. You should have a #10 wire not connected=
. On all my Royales. I made some simple modifications so I could operate b=
oth from either power source at the same time. Make certain that you keep y=
our 30 Amp shore connections clean. As your at the upper limit. I added ins=
ulation to this 78 Royale. ( The Mouse House. ) Now, no matter the outside=
temps. The front A/C does the job. Bob Dunahugh 78 Royale. Member G=
MCMI
ted. I found that all 110 volt wiring was 12 gauge. Each roof vent had a 10=
gauge wire ( 30 Amp ) for A/C units. I helped a friend add a second A/C t=
o his Royale in his roof vent. The wire was there. Pull the inside roof ven=
t trim out. There should be some wires tucked back between the foam insulat=
ion, and the ceiling plywood. Every one I've had. Was set up so that one A/=
C unit ran only from the generator. The other ( front I believe. And that=
was the higher BTU unit. Outside cover is higher ) . ran from shore power.=
In, or around your breaker panel. You should have a #10 wire not connected=
. On all my Royales. I made some simple modifications so I could operate b=
oth from either power source at the same time. Make certain that you keep y=
our 30 Amp shore connections clean. As your at the upper limit. I added ins=
ulation to this 78 Royale. ( The Mouse House. ) Now, no matter the outside=
temps. The front A/C does the job. Bob Dunahugh 78 Royale. Member G=
MCMI
