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I was hoping to rely more on calculations from dead tests but I guess nothing beats actual measurements although there are lots to get through with 3 supplies! I was just having a bit of trouble with the math from Zs tables and the formula!

We are using 2x40kw generators that have sync capabilities with the shore supply (dependant on load) I counted up 106 circuits -boat is 105 ft and just picked a 32a cabin supply as an example.Wanted to make sure I am going down the right road with testing procedures and/or calculations.All...

I am taking 0.8 Ze as a theoretical value on the generator supply with a 32a supply to cabin consumer unit. I have no actual measured value just getting vessel ready for power up!

Hi guys I am confused with calculation of Zs. Using the formula Zs=Ze+(R1+R2) then a typical value for a type C 32A mcb to BS EN60898 would be 0.8ohms.For a TN-S supply then Zs=0.8+(R1+R2) so whatever the values of R1+R2 surely the installation will not comply? Thanks in anticipation for any...

Silicon spray mate, it will fly through

Am a marine engineer working on a 32m boat, distribution boards in each cabin, with pumps and fans etc and everything else I counted 106 circuits! Has taken me 4 weeks to go through it all

I would use a step drill. I got a pack of 3 varying sizes for

Left school in `81, did an EITB apprenticeship and BTEC at day release college.Went on to do a couple of courses (basic electronics and PLCs) Did 16th edition but then left the company. Have now been working in the marine/ luxury boat industry for last 18 years(probably not the best of career...

Cool, thanks Doc H

All my old posts have just re-appeared. Duh!

Thanks Andy, had some posts the other day(first day on here),seem to have lost everything! Was asked something about marine electrics but dont know the outcome!

hi everyone, having a little difficulty navigating around the forum, hopefully will get used to it. just being a bit computer illiterate I guess!

Hi Matt, will try to help if I can. Yes nmea is the kind of international language enabling different makes of equipment to interface with each other. normally the gps will connect to an input to the radar. More than likely a case of connecting a cable with the gps to a cable that comes with the...

Dont you just love the prices of marine equipment. Think of a number then double it! lol

ha ha, yes not the nicest of smells but I try not to do too much of that. Stick to wiring and testing as much as I can!

thanks for the welcome. yes its Princess Yachts. Big money to buy, big money to run

Hi to you all. I am new to this. I am a apprentice served sparky now working in the luxury motorboat industry.