<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1465425478816_2614"><span>Hank,</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2613" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2612">is the compressor on when it is doing this?</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2599" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2600">If not, & you are just attaching the terminals to the battery, possibly it has </span></div><div id="yui_3_16_0_ym19_1_1465425478816_2651" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2650">to do with the input capacitors on the compressor motor controller drawing</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2687" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2705">large amounts of current.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2681" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2680">On my Kelly controller it specifies the use of a pre-charge resistor to charge</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2693" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2694">up the capacitors so that there is not a large in-rush of current that causes</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2707" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2706">arcing on the switch or damages sensitive electronics.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2750" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2749">In my test system for my motor I have a circuit breaker that I close & this sends</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2733" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2732">power through the pre-charge resistor, which is wired across the switch terminals.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2748" dir="ltr"><span>Then I turn the main switch on.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2790" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2789">You could try attaching a resistor across the compressor to battery connection</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2791" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2792">(on the positive terminal) before attaching the compressor wire. If this worked</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2845" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2846">it would indicate the problem. I use a 1k ohm 10W resistor.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2837" dir="ltr"><span id="yui_3_16_0_ym19_1_1465425478816_2836">I am not the smartest with electronics but this may be helpful if no one</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2838" dir="ltr"><span>else answers.</span></div><div id="yui_3_16_0_ym19_1_1465425478816_2839" dir="ltr"><span>Cheers Alan</span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1465425478816_2597"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1465425478816_2618" style="display: block;"> <div id="yui_3_16_0_ym19_1_1465425478816_2617" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1465425478816_2616" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1465425478816_2615" dir="ltr"> <font id="yui_3_16_0_ym19_1_1465425478816_2620" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1465425478816_2619"> <b><span style="font-weight: bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Thursday, June 9, 2016 10:12 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> [PSUBS-MAILIST] wiring problem<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1465425478816_2672"><br><div id="yiv7817302644"><div id="yui_3_16_0_ym19_1_1465425478816_2674"><div id="yui_3_16_0_ym19_1_1465425478816_2673" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div id="yiv7817302644yui_3_16_0_ym19_1_1465423436941_4229" dir="ltr">Today I was doing some final wiring and discovered if my hp compressor has the ground wire on it, my acoustic radio trips the breaker. What the bleep is going on? Nothing is grounded to the hull anymore. I am taking 24V off a 36V bank for the compressor and the Radio is also taking 24V from the same source. </div><div id="yiv7817302644yui_3_16_0_ym19_1_1465423436941_4229" dir="ltr">Hank</div></div></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a id="yui_3_16_0_ym19_1_1465425478816_2671" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div></div></body></html>