Jan rediscovered the stored dehumidifier today. It’s been in deep storage since her winter on shore power at Rugby several years ago. We’re now starting to get some condensation on the mushroom vents and Jan thought it might be a good idea to run the dehumidifier when we were cruising and the inverter was on. Obviously the dehumidifier needed to be checked before we plugged it in and that’s when i had the idea it might be possible to run it off the boat 12V system. It has a ‘power brick’ so I inspected the information on the label.
The first thing I noticed was the input and output power.
Input is 240V and 1.5A = 360W
Output 12V and 6A = 72W
80% of the electricity is lost in the power brick. It’s definitely worth attempting to eliminate the power brick and run the dehumidifier directly off the 12V.
The other useful piece of information was at the bottom of the label where the pos and neg wiring for the plug was displayed.
I needed a few things to complete the conversion.
Pliers, soldering iron, solder and a spare 12V plug.
The first step was to cut the cable between the power brick and the dehumidifier using the pliers
You will note I’m not going to cut it at the power brick. If the experiment doesn’t work I’ll need to reconnect the original wiring so I’m leaving a ‘tail’ if that happens.
I cut the cable and soldered the 12V plug onto the end before connecting the dehumidifier to the 12V system.
It didn’t work! Obviously the power brick produces 12V AC and the boat system is 12V DC. So I removed the 12V plug and reconnected the cable to the power brick. Nothing ventured…. nothing gained!
By 10.30 the weather was looking slightly better and Jan helped me apply masking tape to the starboard handrail. I then gave the red paint a light sanding ensuring I carefully removed the paint lines from earlier patch repairs to the paint. It Then received a first top coat of Alpha Red. I think my painting might be improving Towpath Bill.