Electrical prep

I met at the boat with Neo from Best Marine Electrical again last night, after finally getting a quote from him for the electrical overhaul a few hours prior.  It was too expensive, mainly because of the labor cost which I thought was about twice what it should be.  (He gave me pretty good prices on all the parts.)  After talking with him for a bit I agreed to wait until next Friday before starting since a worker who will accept a reasonable cost of labor returns from vacation then.  Apparently most of the other yacht electricians around demand ~S$1000/day, which I guess reflects the fact that most yacht owners here are too rich for their own good.

He brought along the DC panel to show me.  It’s a BEP 905NMV and is pretty nice.  Flush mounted it appears a little wider than we first thought.  It’ll require some woodworking on the electrical cabinet door, as will the new AC panel, a BEP 900-AC1 that’ll go just below the DC panel.  He took the cabinet door back to his shop to prep it, and also measured inside the cabinet so he can prepare leads for all the circuits, which should speed up installation quite a bit.

We also strategized a bit about placement of the battery charger (vertically mounted inside the cabinet); what to do with the holes from the old electrical panels (cooling vents for the battery charger, probably), and so on.

I also had him take a look at the water and fuel tanks, where I want to install some ultrasonic tank senders so I can have some kind of clue how much water and fuel is in the tanks.  It’s going to be hard.  There is absolutely no top access to the fuel tanks, which are installed completely beneath the cabin sole.  Only access is to the front of the starboard tank through a 6 sqin access port.  (There might be similar access to the port tank if I can remove part of the settee where there’s currently a stripped bolt causing problems.)  It appears the only approach is to create new small access ports, cutting through the cabin sole, which is going to be kind of hard since the tanks are directly beneath with no separation.  After that we’ll have to partially drain the fuel from the tanks and cut holes in them as well, then insert and seal some kind of threading, and finally put in the sensor.  (The tanks are powder coated steel.)  Kind of a big and tricky job.  I think I’ll focus on the rest of the electrical stuff first and worry about the fuel tanks afterward.

The water tanks aren’t quite as bad since there is at least access to the tops of them through ports in the settees.  However, we’ll still need to cut holes in the tanks and either tap threads or affix some threaded tubes somehow.  Those tanks are stainless steel.  Hopefully we can install senders on them as part of the electrical overhaul.

After Neo left I put together a list of circuit breaker labels and approximate ratings so he can arrange all that at his shop.

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