Call and electrician, it will be cheaper, they will have a look and do it the easiest way.
Your panel should have extra room for at least 2 breakers unless something else has been added already. A small sub panel is pretty cheap though. Hard to really say without seeing though. Cheap is subjective though, but I am keeping the costs of a reef tank in mind when saying that.
I just put 30A breakers in. I did have room amp wise.
No, do not do this.
i want to make sure this is legal... as i dont want the insurance company to be able to say no to any claims.
Insurance company is not the right people to call, they do not have the knowledge to know if something is to code or not. And as long as its to code they can not really say anything.
City will want a permit, but they don't care as long as its to code either. Home owner permit is like 100 bucks in most places. Electrical Contractors can pull permits cheaper.
Not legal..I'll save you the phone call
Who are you? There are many legal ways to do what he wants.
Yes the breakers "job" is to protect the wiring. (besides typical over current protection)
And you really should only run fuses or breakers at 80% of their rating continuously.
example 15A breaker = 12 Amp continuous load.
Again who are you? First year Electrician? Starter?
Fuses and breakers are not the same and should be ran for what they are rated for at their rated usage.
You can get 15 amp continuous load breakers.
Sorry, guess I should've qualified that with "I built the house and over did everything, including wiring" statement. Sorry. I wired when building for serious "anything" that comes about situation. I'd wonder if this might also be the case here. Most builders in the area here use larger than needed for everything. Something to look at.
I will bet my pay cheque that the home builder absolutely did not run any wire larger then code, unless spec'ed by the home owner, and from the OP I would bet another pay cheque was not the case.
I also SERIOUSLY doubt you ran #10 branch circuits throughout your house, you would double the cost of your wire and then you would be outside the spec of wire size on all your devices unless you spliced a 12 or 14 before devices. And then if you put a 30 amp breaker on the line you would need to have 30 amp rated devices on that entire circuit. There is really now way you could switch out a breaker for a 30 amp and have it run your tank in code unless you are running a 30 amp sub in your stand or something, but that is not logical.
Are you in a trade? Why is there so much bad information in this thread?
The breakers need to be GFCI type for all outdoor wiring by code now, not to mention the aquarium is much safer with one...
I'd mount a junction box inside then a short piece of conduit to go through the hole in the walls with an LB fitting screwed into that on the outside.. Then run/bury your pvc conduit. and repeat on the other end where it re-enters the house.
What are you jibbering about? code reference for a wire outside with no devices outside needing to be GFI?
GFI receptacles are much cheaper then a GFI breaker. And easier to reset most of the time. GFI breakers are less prone to nuisance tripping. I would run power heads off one GFI receptacle and return pump/heater(s) off another, lights and the like off a normal receptacle. Or return and one power head on one and the other power heads and heaters on another.
Sometimes its easier to run under the baseboards.