How big a fuse do I need?

For heating, lighting and electronics, you want the smallest fuse that is more than 10% over the rated current of your product.   The rated current is the wattage divided by 12, in 12V systems.  So for example, if your vest is 45W, it draws 45/12 = 3.75A.  10% more than 3.75 is 1.1 * 3.75 = 4.125.  Use a 5A fuse.  If the manufacturer supplied or recommended a fuse size, do what they do.  For motorized devices, you may need to go higher to handle startup surges.  For double outlets, size to fuse to the nearest size larger than the sum of the currents of  the accessories you expect to connect.

Request Details

Session Id:134ttc45qmyzng55tiknjkm3Request Type:GET
Time of Request:12/10/2018 7:36:11 PMStatus Code:200
Request Encoding:Unicode (UTF-8)Response Encoding:Unicode (UTF-8)

Trace Information

CategoryMessageFrom First(s)From Last(s)
aspx.pageBegin PreInit
umbracoInithandling request2.34439673013245E-050.000023
request handlercurrent url '/faq/sae-zip-on-power/how-big-a-fuse-do-i-need.aspx'0.0001624909457781460.000139
umbracoRequestHandlerxpath: '/root/*/* [@urlName = "faq"]/* [@urlName = "sae-zip-on-power"]/* [@urlName = "how-big-a-fuse-do-i-need"]'0.0002364607046771520.000074
umbracoRequestHandlerJust before xPath query (False, '/root/*/* [@urlName = "faq"]/* [@urlName = "sae-zip-on-power"]/* [@urlName = "how-big-a-fuse-do-i-need"]')0.0003124514952400660.000076
umbracoRequestHandlerpageXPathQueryStart: '/root'0.0003399375258692050.000027
umbracoRequestHandlerAdding to cache... ('/faq/sae-zip-on-power/how-big-a-fuse-do-i-need.aspx')0.001276079392591060.000936
umbracoRequestHandlerAfter xPath query0.001305182248551320.000029
umbracoRequestHandlerAccess checking started0.001354091214817880.000049
umbracoRequestHandlerPage not protected0.001462418512003310.000108
umbracoRequestHandlerAccess checking ended0.001487479304635760.000025
umbracoInitDone handling request0.001507689621274830.000020
umbracoPageElement loaded: questionText0.001797505561879140.000290
umbracoPageElement loaded: bodyText0.001850456591473510.000053
umbracoPageElement loaded: umbracoNaviHide0.001894919288079470.000044
umbracoPagePagedata loaded for How big a fuse do I need? (ID: 1265)0.001919980080711920.000025
aspx.pageEnd PreInit0.002572369101821190.000652
aspx.pageBegin Init0.002604705608443710.000032
itemStart parsing 'pageTitle'0.002650785130380790.000046
itemDone parsing 'pageTitle'0.002704140366307950.000053
umbracoMacroMacro loaded from cache (ID: 14, Header Images)0.002764367109892380.000060
renderMacroRendering started (macro: Header Images, type: 1, cacheRate: 0)0.002797107822847680.000033
umbracoMacroBefore adding extensions0.002867843931084440.000071
umbracoXsltExtensionExtension added: urn:Exslt.ExsltCommon, ExsltCommon0.004443440216266560.001576
umbracoXsltExtensionExtension added: urn:Exslt.ExsltDatesAndTimes, ExsltDatesAndTimes0.004482244024213580.000039
umbracoXsltExtensionExtension added: urn:Exslt.ExsltMath, ExsltMath0.004506496404180460.000024
umbracoXsltExtensionExtension added: urn:Exslt.ExsltRegularExpressions, ExsltRegularExpressions0.004530344577814570.000024
umbracoXsltExtensionExtension added: urn:Exslt.ExsltStrings, ExsltStrings0.004553384338783110.000023
umbracoXsltExtensionExtension added: urn:Exslt.ExsltSets, ExsltSets0.004576424099751660.000023
umbracoMacroAfter adding extensions0.004597442829056290.000021
umbracoMacroBefore performing transformation0.004647968620653970.000051
umbracoMacroAfter performing transformation0.005056217016763250.000408
umbracoMacroMacro loaded from cache (ID: 13, Top Navigation)0.005115231141349340.000059
renderMacroRendering started (macro: Top Navigation, type: 1, cacheRate: 0)0.005146759235306290.000032
umbracoMacroBefore adding extensions0.005214261692880790.000068
umbracoXsltExtensionExtension added: urn:Exslt.ExsltCommon, ExsltCommon0.006711441949503310.001497
umbracoXsltExtensionExtension added: urn:Exslt.ExsltDatesAndTimes, ExsltDatesAndTimes0.006747820519453640.000036
umbracoXsltExtensionExtension added: urn:Exslt.ExsltMath, ExsltMath0.006771668693087750.000024
umbracoXsltExtensionExtension added: urn:Exslt.ExsltRegularExpressions, ExsltRegularExpressions0.006798346311051320.000027
umbracoXsltExtensionExtension added: urn:Exslt.ExsltStrings, ExsltStrings0.006821790278352650.000023
umbracoXsltExtensionExtension added: urn:Exslt.ExsltSets, ExsltSets0.006844830039321190.000023
umbracoMacroAfter adding extensions0.006866252974958610.000021
umbracoMacroBefore performing transformation0.006904652576572850.000038
umbracoMacroAfter performing transformation0.008328267280629140.001424
umbracoMacroMacro loaded from cache (ID: 1, Breadcrumb Nav)0.00838364354822020.000055
renderMacroRendering started (macro: Breadcrumb Nav, type: 1, cacheRate: 0)0.008413150610513250.000030
umbracoMacroBefore adding extensions0.008480653068087750.000068
umbracoXsltExtensionExtension added: urn:Exslt.ExsltCommon, ExsltCommon0.009971366023385760.001491
umbracoXsltExtensionExtension added: urn:Exslt.ExsltDatesAndTimes, ExsltDatesAndTimes0.01000774459333610.000036
umbracoXsltExtensionExtension added: urn:Exslt.ExsltMath, ExsltMath0.01003159276697020.000024
umbracoXsltExtensionExtension added: urn:Exslt.ExsltRegularExpressions, ExsltRegularExpressions0.01005503673427150.000023
umbracoXsltExtensionExtension added: urn:Exslt.ExsltStrings, ExsltStrings0.0100800975269040.000025
umbracoXsltExtensionExtension added: urn:Exslt.ExsltSets, ExsltSets0.01010313728787250.000023
umbracoMacroAfter adding extensions0.01012456022350990.000021
umbracoMacroBefore performing transformation0.01016376823778970.000039
umbracoMacroAfter performing transformation0.01054453060326990.000381
itemStart parsing 'questionText'0.01059748163286420.000053
itemDone parsing 'questionText'0.01066134623344370.000064
itemStart parsing 'bodyText'0.01070500051738410.000044
itemDone parsing 'bodyText'0.01075350527731790.000049
aspx.pageEnd Init0.01082383717922190.000070
aspx.pageBegin InitComplete0.01084808955918870.000024
aspx.pageEnd InitComplete0.01086870408216060.000021
aspx.pageBegin PreLoad0.01088851019246690.000020
aspx.pageEnd PreLoad0.0109123583661010.000024
aspx.pageBegin Load0.01093378130173840.000021
aspx.pageEnd Load0.01098026503000830.000046
aspx.pageBegin LoadComplete0.01100370899730960.000023
aspx.pageEnd LoadComplete0.01102432352028150.000021
aspx.pageBegin PreRender0.0110437254242550.000019
aspx.pageEnd PreRender0.01109950589817880.000056
aspx.pageBegin PreRenderComplete0.01112294986548010.000023
aspx.pageEnd PreRenderComplete0.01114558542011590.000023
aspx.pageBegin SaveState0.01259466512313740.001449
aspx.pageEnd SaveState0.01271956487996690.000125
aspx.pageBegin SaveStateComplete0.01274583829159770.000026
aspx.pageEnd SaveStateComplete0.01276645281456950.000021
aspx.pageBegin Render0.0127858547185430.000019
aspx.pageEnd Render0.0151682468439570.002382

Control Tree

Control UniqueIDTypeRender Size Bytes (including children)ViewState Size Bytes (excluding children)ControlState Size Bytes (excluding children)
__PageASP.default_aspx817100
    ctl00ASP.masterpages_faqquestion_master000
        ctl00$ctl00ASP.masterpages_runwaymaster_master000
            ctl00$ctl00$ctl00ASP.umbraco_masterpages_default_master000
                ctl00$ctl00$ctl00$ContentPlaceHolderDefaultSystem.Web.UI.WebControls.ContentPlaceHolder000
                    ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl17System.Web.UI.LiteralControl000
                    ctl00$ctl00$ctl00$ContentPlaceHolderDefault$headSystem.Web.UI.HtmlControls.HtmlHead000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl00System.Web.UI.HtmlControls.HtmlTitle000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl01umbraco.presentation.templateControls.Item000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl01$ctl00System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl02System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl03System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl04System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl05System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl06System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl07System.Web.UI.HtmlControls.HtmlMeta000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl08System.Web.UI.HtmlControls.HtmlLink000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl09System.Web.UI.HtmlControls.HtmlLink000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl18System.Web.UI.ResourceBasedLiteralControl000
                    ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl19System.Web.UI.LiteralControl000
                    aspnetFormSystem.Web.UI.HtmlControls.HtmlForm000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl20System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl10System.Web.UI.WebControls.LoginStatus000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl10$ctl00System.Web.UI.WebControls.LinkButton000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl10$ctl01System.Web.UI.WebControls.ImageButton000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl10$ctl02System.Web.UI.WebControls.LinkButton000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl10$ctl03System.Web.UI.WebControls.ImageButton000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl21System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl11umbraco.presentation.templateControls.Macro000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl12System.Web.UI.WebControls.PlaceHolder000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl22System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl23System.Web.UI.ResourceBasedLiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl13umbraco.presentation.templateControls.Macro000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl14System.Web.UI.WebControls.PlaceHolder000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl24System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl25System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl15umbraco.presentation.templateControls.Macro000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl16System.Web.UI.WebControls.PlaceHolder000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl26System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl27System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolderSystem.Web.UI.WebControls.ContentPlaceHolder000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl02System.Web.UI.LiteralControl000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl00umbraco.presentation.templateControls.Item000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl00$ctl00System.Web.UI.LiteralControl000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl03System.Web.UI.LiteralControl000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl01umbraco.presentation.templateControls.Item000
                                ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl01$ctl00System.Web.UI.LiteralControl000
                            ctl00$ctl00$ctl00$ContentPlaceHolderDefault$RunwayMasterContentPlaceHolder$ctl04System.Web.UI.LiteralControl000
                        ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl28System.Web.UI.ResourceBasedLiteralControl000
                    ctl00$ctl00$ctl00$ContentPlaceHolderDefault$ctl29System.Web.UI.ResourceBasedLiteralControl000

Session State

Session KeyTypeValue

Application State

Application KeyTypeValue
vnc38ykjnkjdnk2jt98ygkxjngSystem.DateTime12/10/2018 6:24:51 PM
umbracoUrlSystem.Stringwww.manicsalamander.com:80/umbraco
umbracoNeedConfigurationSystem.BooleanFalse

Request Cookies Collection

NameValueSize

Response Cookies Collection

NameValueSize

Headers Collection

NameValue
ConnectionKeep-Alive
Accepttext/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encodinggzip
Hostwww.manicsalamander.com
If-Modified-SinceThu, 18 Oct 2018 07:52:17 EDT
User-AgentCCBot/2.0 (https://commoncrawl.org/faq/)

Response Headers Collection

NameValue
X-AspNet-Version2.0.50727
Cache-Controlprivate
Content-Typetext/html

Form Collection

NameValue

Querystring Collection

NameValue

Server Variables

NameValue
ALL_HTTPHTTP_CONNECTION:Keep-Alive HTTP_ACCEPT:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 HTTP_ACCEPT_ENCODING:gzip HTTP_HOST:www.manicsalamander.com HTTP_IF_MODIFIED_SINCE:Thu, 18 Oct 2018 07:52:17 EDT HTTP_USER_AGENT:CCBot/2.0 (https://commoncrawl.org/faq/)
ALL_RAWConnection: Keep-Alive Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: gzip Host: www.manicsalamander.com If-Modified-Since: Thu, 18 Oct 2018 07:52:17 EDT User-Agent: CCBot/2.0 (https://commoncrawl.org/faq/)
APPL_MD_PATH/LM/W3SVC/366/ROOT
APPL_PHYSICAL_PATHC:\HostingSpaces\manicsal\manicsalamander.com\wwwroot\
AUTH_TYPE 
AUTH_USER 
AUTH_PASSWORD 
LOGON_USER 
REMOTE_USER 
CERT_COOKIE 
CERT_FLAGS 
CERT_ISSUER 
CERT_KEYSIZE 
CERT_SECRETKEYSIZE 
CERT_SERIALNUMBER 
CERT_SERVER_ISSUER 
CERT_SERVER_SUBJECT 
CERT_SUBJECT 
CONTENT_LENGTH0
CONTENT_TYPE 
GATEWAY_INTERFACECGI/1.1
HTTPSoff
HTTPS_KEYSIZE 
HTTPS_SECRETKEYSIZE 
HTTPS_SERVER_ISSUER 
HTTPS_SERVER_SUBJECT 
INSTANCE_ID366
INSTANCE_META_PATH/LM/W3SVC/366
LOCAL_ADDR64.27.51.218
PATH_INFO/default.aspx
PATH_TRANSLATEDC:\HostingSpaces\manicsal\manicsalamander.com\wwwroot\default.aspx
QUERY_STRING 
REMOTE_ADDR52.91.245.237
REMOTE_HOST52.91.245.237
REMOTE_PORT49180
REQUEST_METHODGET
SCRIPT_NAME/default.aspx
SERVER_NAMEwww.manicsalamander.com
SERVER_PORT80
SERVER_PORT_SECURE0
SERVER_PROTOCOLHTTP/1.1
SERVER_SOFTWAREMicrosoft-IIS/7.5
URL/default.aspx
HTTP_CONNECTIONKeep-Alive
HTTP_ACCEPTtext/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
HTTP_ACCEPT_ENCODINGgzip
HTTP_HOSTwww.manicsalamander.com
HTTP_IF_MODIFIED_SINCEThu, 18 Oct 2018 07:52:17 EDT
HTTP_USER_AGENTCCBot/2.0 (https://commoncrawl.org/faq/)

Microsoft .NET Framework Version:2.0.50727.8793; ASP.NET Version:2.0.50727.8762