<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1495342451835_2866"> This is a summary of what I have been researching on wires. </div><div id="yui_3_16_0_ym19_1_1495342451835_2994">Steve wanted to hear this, but I would appreciate any other words of wisdom on this subject.</div><div id="yui_3_16_0_ym19_1_1495342451835_2914" dir="ltr"> As a generalization G.L. says protective coverings, sleeves, sheaths & fillers are to be</div><div id="yui_3_16_0_ym19_1_1495342451835_2921" dir="ltr">made of halogen free materials. This is because they are toxic & acidic when burning.</div><div id="yui_3_16_0_ym19_1_1495342451835_2963" dir="ltr">PVC has halogens in it, & it is a common insulation on marine grade wire! Also PTFE</div><div id="yui_3_16_0_ym19_1_1495342451835_2964" dir="ltr">(Teflon) insulation has halogens. Subconn connectors have PTFE wire insulation that runs</div><div id="yui_3_16_0_ym19_1_1495342451835_3047" dir="ltr">in to the hull.</div><div id="yui_3_16_0_ym19_1_1495342451835_3034" dir="ltr">In my view the halogen content won't matter if the wire is outside the hull. G.L. does say that materials </div><div id="yui_3_16_0_ym19_1_1495342451835_3241" dir="ltr">& insulations for electrical equipment used in water are to be agreed with G.L. in each single case.</div><div id="yui_3_16_0_ym19_1_1495342451835_2981" dir="ltr">G.L. also says insulation must be resistant to saltwater & oil vapors, not be hydroscopic & has to </div><div id="yui_3_16_0_ym19_1_1495342451835_3097" dir="ltr">be flame retardant & self extinguishing.</div><div id="yui_3_16_0_ym19_1_1495342451835_3121" dir="ltr">PTFE has a very high flash point so possibly gains approval for internal use from that perspective.</div><div id="yui_3_16_0_ym19_1_1495342451835_3223" dir="ltr"> There is a standard for electrical cable for boats "UL1426", & when you search for marine electrical</div><div id="yui_3_16_0_ym19_1_1495342451835_3282" dir="ltr">wire it will quote a standard like that.</div><div id="yui_3_16_0_ym19_1_1495342451835_3259" dir="ltr">For sizing wire for submersibles ABS refers you to part 4, chapter 8 of the "steel vessel Rules" &</div><div id="yui_3_16_0_ym19_1_1495342451835_3348" dir="ltr">table 6 in section 3.</div><div id="yui_3_16_0_ym19_1_1495342451835_3347" dir="ltr"> It started to get complicated as G.L. have a section Annex E that deals with umbilicals etc.</div><div id="yui_3_16_0_ym19_1_1495342451835_3375" dir="ltr">I came to the conclusion that I would use a PVC insulated marine grade wire that conformed to the </div><div id="yui_3_16_0_ym19_1_1495342451835_3376" dir="ltr">UL1426 standard for external use. And use PTFE insulated wire inside the hull. My thinking on going</div><div id="yui_3_16_0_ym19_1_1495342451835_3458" dir="ltr">with PVC over PTFE externally is that my glues would be more likely to stick to PVC than Teflon (PTFE) </div><div id="yui_3_16_0_ym19_1_1495342451835_3465" dir="ltr">on my home baked through hulls.</div><div id="yui_3_16_0_ym19_1_1495342451835_3466" dir="ltr">Cheers Alan</div><div id="yui_3_16_0_ym19_1_1495342451835_3446" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1495342451835_3054" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1495342451835_3011" dir="ltr"><br></div></div></body></html>