Locate breaker on 1986 36 Mariner?

[Great laker]

During the survey, the main electrical panel showed no juice to the air Conditioning circuit. USCG and/or ABYC regs require a breaker in place for any wire run greater than 10 feet (between the inlet and the panel in this case). Can anyone help me locate the location of this breaker? Carver didn't supply a diagram of the AC wiring, just the 12V side. Our go/no-go decision will happen Wednesday following the compression test.

Thanks!
Great Laker

[waybomb]

An 86 must be different than mine because on my my Mariner the 120 volt panels are right below the 12 volt panels. A main just for ac then branch circuits for forward ac, main cabin ac, and ac water pump.

[Great laker]

Hmmm. I haven't got a decent image of the panel but 12V is on top, then a 115 AC panel (seems to be for the circuits when using the genset)
then under that another 115 AC panel. According to the surveyor there must be another breaker in-line between the panel and the shore power plug.
If that breaker is tripped, it would explain why the panel shows no power to that circuit.
But I haven't had time to try and follow the wiring harness because the sale isn't final and the boat is stored in a heated out building the seller owns. If I get a better pic, I'll try to post it after we do the compression test on Wednesday. I'd expect your panel and mine to be nearly the same since they're only one model year apart. But then, stranger things have happened!
Thanks for the feedback Fred.

Great Laker

[waybomb]

if you show no ac volts it may simply be the relays that switch between Jenny and shore. These are ina box under the aft cushion at the salon table. Lift the bottom cushion and you'll see the access panel. In there is a black box. Make sure ac power is disconnected. Open the box. 6 screws I believe. You'll see the relays. The one for ac power may be stuck.

[Great laker]

I had wondered what that black box was for! but no one seemed to have an idea. I'll pull the screws Wednesday and take a look.
Thanks!


Great Laker

[waybomb]

Just make sure the shore power is disconnected or you will have live voltage in there.

[waybomb]

You should also check voltage at the plug. Then I would pull the inlet power receptacle and check the connection on the back side. And if brave plug the cord in and check power at the back side of the plug. Then on to the relays. Then out of the relays. I'm sure you will find the issue.
This should be an easy fix. Could simply be the cord or the dock connection.

[Great laker]

The relay which switches off the shore power when the genset is started, overheated and stuck. So it never switched back over to shore power. I'll replace the relay.
The survey and compression tests went well. Have decided to move forward with purchase. Thanks for the input Fred.

Marsh
Great Laker