Mekong Posted December 28, 2014 Report Share Posted December 28, 2014 Torrenova You will also require a mixer tap upstream of the heater to balance hot and cold water so the optimum temperature is achieved BB Now then Now then as if it was ever in doubt Link to comment Share on other sites More sharing options...
radioman Posted December 28, 2014 Report Share Posted December 28, 2014 You can get both the fixed (or switched level) on demand heaters or a regular shower unit. We used the switched demand heaters for the sinks and showers but in the upcountry house just a regular shower unit. The regular shower unit has adjustable flow rate and temperature so there is no need for mixing. Horses for courses I guess. Think some GFCI's are set for a 5mA trip level. Our BKK House has one of those whole house Safe-T-Cut devices, can be set at 5 or 15mA I think. Link to comment Share on other sites More sharing options...
Mekong Posted December 28, 2014 Report Share Posted December 28, 2014 5 or 15mA no way, it would be tripping out all the time, IEEE and NEC regs call for a 30mA Link to comment Share on other sites More sharing options...
radioman Posted December 28, 2014 Report Share Posted December 28, 2014 5 or 15mA no way, it would be tripping out all the time, IEEE and NEC regs call for a 30mA I would have thought so too. I have some big old vacuum tube iron that certainly causes an imbalance at start up, even with some fairly heavy duty soft start switching on it. 5kW Resonant choke power supplies. That takes the trip out at the low level, really can't remember where it's actually set, I'll look next week though. There's plenty of 5mA RCCD's out there. Maybe they have other uses. A quick google, https://www.bluesea.com/articles/577 Though this is aimed at boats the suggestion that 5mA is appropriate for single branch circuits seems a (semi-)rational approach to other systems as well. As they say, lots of nuisance tripping risk if fitted on a main incomer. The regs are an upper limit. Link to comment Share on other sites More sharing options...
cavanami Posted January 1, 2015 Report Share Posted January 1, 2015 I would not use a GFI such as Safety-Cut as you can completely eliminate the device with a setting on the device that disables the GFI function. Use a fixed GFI that cannot be disabled. ...and Kong, you are correct that the current kills but if you eliminate the voltage there will be zero current. I say voltage as some do not understand current. Now up in Isaan and I greatly appreciate that the cousin has a heater! I shut my eyes and just imagine it has a ground rod and is GFI protected...no matter, it is always an adventure up country Link to comment Share on other sites More sharing options...
torrenova Posted January 17, 2015 Author Report Share Posted January 17, 2015 Thanks for the responses. Now she says she'll get it done when she visits ! Bloody women ! Link to comment Share on other sites More sharing options...
Mekong Posted January 17, 2015 Report Share Posted January 17, 2015 Bloody women ! We hear you Bro, Indeed Link to comment Share on other sites More sharing options...
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