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by ericmark
Mon Oct 19, 2009 10:46 am
Forum: Electrics Forum
Topic: Spur to ring main
Replies: 4
Views: 5066

Sounds OK but question has to be:- 1) How do you know it is a ring main? Did you test to see the ring was complete? 2) What was the earth loop impedance? 3) Was it under or over 3 meters as 3 meters is the maximum length of cable permitted when going from one current carrying capacity to another (32...
by ericmark
Sun Oct 18, 2009 2:49 pm
Forum: Electrics Forum
Topic: underfloor heating thermostat
Replies: 1
Views: 3461

If you look [url=http://www.thermogroupuk.com/images/technical%20pdfs/Standard%20Tsat.pdf] Here [/url] there is a PDF of connections and it says how the resistance of sensor should be 8k ohms to 12K ohms. My fathers had an option to use room rather than floor temperature and his under floor sensor w...
by ericmark
Sat Oct 17, 2009 10:59 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Wood burning stove in boat
Replies: 5
Views: 9000

Wood burning stove in boat

Fitting a wood burning stove in a narrow boat with back boiler with radiator feed under gunnels and return under floor so should thermo siphon. However it at the moment has an Eberspächer Hydronic D4 which is still wanted for back-up heating and domestic hot water. The original system has only a ver...
by ericmark
Tue Oct 13, 2009 12:27 am
Forum: Electrics Forum
Topic: simple wiring question
Replies: 4
Views: 4765

I was banned and had not realised I had gone back to old site was using laptop since reply has been permitted maybe I can use site again.

Seems I was forgetting to tell people about Part P.
by ericmark
Fri Oct 02, 2009 10:27 pm
Forum: Electrics Forum
Topic: simple wiring question
Replies: 4
Views: 4765

There are three basic ways that NiCd chargers work. 1) They supply a consent current and monitor the voltage as the battery charges it's voltage will rise but once fully charged it will dip slightly this can be used to switch off the charger. It is used by Icom with 6 way chargers they are very expe...
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