Archived

This topic is now archived and is closed to further replies.

  • 0

12 volt Lights

Question

Posted

Hi looking at installing an additional 12 volt halogen ceiling light, I,m taking a feed from an exsisting 12 volt light, however can someone confirm what cable size I need. Many thanks

Share this post


Link to post
Share on other sites

3 answers to this question

Posted

Hi looking at installing an additional 12 volt halogen ceiling light, I,m taking a feed from an exsisting 12 volt light, however can someone confirm what cable size I need. Many thanks

Share this post


Link to post
Share on other sites

Posted

Good point. The cable already installed may not be rated to allow any more current. Good design practices should mean that the rated cable is 30% higher than the maximum allowed current draw.

Remember for 12v wiring the recommended voltage drop allowed is 0.36V or 3% don't know about the rules and regs in the UK for this one though.

Have a look at this quick and easy cable size calculator, http://www.tlc-direct.co.uk/Technical/Lighting/VoltageDrop.html its mainly for mains wiring but should help you.

Also here are some other links that might be of use to you.

http://www.smartgauge.co.uk/cable_type.html

http://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html

here is an easy to read chart

http://www.offroaders.com/tech/12-volt-wire-gauge-amps.htm

Share this post


Link to post
Share on other sites

Posted

Why not convert to LED's and the current will then be tiny.

Share this post


Link to post
Share on other sites


Click this banner for a Motorhome and Touring Caravan insurance quote from Caravan Guard