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Thanks for that dpc. I do not need the Neutral and it looks to me as if it easier to just go "line to line" and get my 208V 3pase that way. Our charger can work from 200V to 240V so 208V is fine With the 3 chargers each pulling about 30A each. Each charger connected to its own phase ... then...

Thanks Jraef I find the number of sockets and pin configuration you have in the US bewildering. No issue with going to a 50A system. If you say we can use 50A per phase ... that would not be 150A in total as I would have to allow for a power factor ? From a voltage perspective in a commercial...

Hi, I would appreciate if someone could enlighten me on US type 3 AC phase connectors and relevant ratings .. here is the problem .. We have equipment that here in Europe is powered from a 3 ph 32A supply (with Neutral) The electrical connection we make is L1 to N, L2 to N and L3 to N we now...

Thanks pmover ... I will give that a go

Hi Can anyone help with a simple macro that will take 3 or 4 columns Excel files … and remove all the rows that has multiple first field. Example : 123, 34234, 2232,2233, 123, 43294, 3233, 32 124, 5442, 4445, 4332 124, 44432, 54322, 4333 124, 4345, 4344, 4332 125, 4343,43215, 4334, 125, 435...

Thanks ! Glad to hear that the electrons are better behaved in California.. :-) On the question of Harmonics ... This is outside my expertise, Can you "measure" this ? I am concerned if we ship the gear to another part US and have similar problems... I was even thinking about removing the...

Hi All who have provided valuable help on this subject... Just to let you know that our machine have been in California for a week now... and NO problem with the RCCB on the machine!! We have made no change to the equipment ...Same extension cable.. The supply we are connected to now is in a...

Very good point Bill ! I have just received email that our equipment have arrived in California ... Will check on Monday and let you all know the outcome. The 8 hour time difference makes it all a bit difficult.

Thanks for that info - I will upload a sketch of the circuit we use over the weekend. Have a good weekend !!

Keith, I was typing my reply before I had seen your reply... The equipment is actually on rubber wheels... I will see if I can get our service engineer to check the ground connection with a clamp on current tester. The ground connection is via the extension cable - We use no separate ground...

I agree that wet cables is possible a real problem.. But again my point about before and after the RCCB still stand... And as the RCCB is after the cable. I can not see the relevence. I think Bill's coment about the earth (TNC, TNN, TN-C-S) sound to me the most plausible reason for the...

Thanks for all you comments! I am trying to get to grips with the way the US does it electrical installations. The cable length from the RCCB to the chargers are the same in both locations. But the equipment is mobile and operate from a extension cable. The length is the about 50ft - 60ft. But...

They may run for 1/2 hour ...sometime just 5 min ... If the charger is off ... no trip. I agree with the capacitive coupling issue with this type of charger. But as I say 4 failing at the same time ?? javascript:openindex(600,400,'/pops/emailthread.cfm?qid=207058&w=600&h=400',1) E-mail This...

They are compact switch mode chargers ... Used frequently in Europe ... We have never had RCCD problems with them before. I can not believe 4 have failed in "transport" ... ??

Nope .. I have been told we have a good 230 - 240 supply ... Even if it was 208V .. (the chargers work down to 200V)the RCCB should still work ok ...

We have a stange problem involving RCCB. We have 6 battery chargers connected to a 3ph supply – 240V line to line (2 Chargers on phase 1, 2 chargers on phase 2 and 2 chargers on phase 3 .. All chargers are 240 so we have had to connect them line to line to get the correct voltage, Each charger...

Hi, Can anyone help with the correct formula for estimating the power requirement of powering a fridge compressor. We have a compressor which normally would be powered by a large diesel engine. The customer wants us to power the fridge using only DC power (or AC via an inverter). I am familiar...

Thanks for the advice ... Have a good holiday and a Happy New Year !

– How can I force my graphs to show the timeline correctly if the time (in 24hr format) goes past 00 … Lets say I have a data set that starts at 18:00 …and ends at 02:00 in the morning. The graph should follow the correct timeline …and not change the timeline to 00:00 to 02:00 and then start at...

Appreciate all you comments. The parts will potentially be Alodined first. Then riveted together. Using a chromatic non hardening joining compound. You are looking at the main spar and a spar web with 6 spar flange strips, top and bottom. I did not know about the heat issue. It was not our...