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<div class="moz-cite-prefix">Be careful with that. At such low
voltages, I suspect its unlikely to be a problem, but you can only
guarantee isolation up to the rating. Going over current is a
bigger problem, because components get hot and fail by melting,
welding, or in some cases, starting electrical fires (I presume
that you do have fuses / breakers installed?) Higher voltages can
potentially break through insulators or jump circuit traces, in
which case the relay would fail, but still not expose you to
anything dangerous else it wouldn't have passed CSA / UL. Again,
36 V DC wouldn't worry me, but I would definitely test it first to
make sure it will do what you want. Ratings are given for a
reason.<br>
<br>
Incidentally, standard hardware store electrical tape, when
applied without stretching it, provides about 600 V of isolation.<br>
<br>
Sean<br>
<br>
<br>
On 2016-05-08 06:05, hank pronk via Personal_Submersibles wrote:<br>
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<blockquote
cite="mid:1518558015.480091.1462709136708.JavaMail.yahoo@mail.yahoo.com"
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<div style="color:#000; background-color:#fff;
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<div id="yui_3_16_0_ym19_1_1462708679376_4528"><span>Hi Sean,</span></div>
<div id="yui_3_16_0_ym19_1_1462708679376_4379"><span
id="yui_3_16_0_ym19_1_1462708679376_4380">Thanks' , I
was thinking to use 12 v to activate the relay and run 36v
through the load side. I just want to be sure the relay
rated at 30\40 A at 12 V can handle 20A at 36 V on the load
side. So my amp draw is less than rated but my voltage is
higher than rated.</span></div>
<div id="yui_3_16_0_ym19_1_1462708679376_4378"><span>Hank</span></div>
<div class="qtdSeparateBR"><br>
<br>
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<div dir="ltr"><font size="2" face="Arial"> On Saturday,
May 7, 2016 7:16 PM, Sean T. Stevenson via
Personal_Submersibles
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> wrote:<br>
</font></div>
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<div id="yiv1680863137">
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<div dir="ltr">You can't necessarily use a relay at
higher than designed voltage. The coils are
specific to a particular voltage and type (AC /
DC). On the load side, you can use any voltage
and current within the rated maximums.</div>
<div dir="ltr">Sean<br clear="none">
</div>
<br clear="none">
<br clear="none">
<div class="yiv1680863137gmail_quote">On May 7, 2016
7:00:23 PM MDT, hank pronk via
Personal_Submersibles
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> wrote:
<blockquote class="yiv1680863137gmail_quote"
style="margin:0pt 0pt 0pt 0.8ex;border-left:1px
solid rgb(204, 204, 204);padding-left:1ex;">
<div class="yiv1680863137yqt9747186470"
id="yiv1680863137yqt66494">
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style="color:#000;background-color:#fff;font-family:HelveticaNeue,
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Grande, sans-serif;font-size:12px;">
<div
id="yiv1680863137yui_3_16_0_ym19_1_1462669034304_2646">Hi
All,</div>
<div>I have some 30\40 amp 12 volt relays,
what would the rating be at 36 volts.
Would they still be at 30\40 amp or 1\3
that.</div>
<div
id="yiv1680863137yui_3_16_0_ym19_1_1462669034304_2672">Hank</div>
</div>
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