Power tapping in car...made easy

eringobragh · 13-02-2008 8:42pm #1

I brought a few of these off this guy and they work real well (see below)

http://www.accessafuse.com/

I used one today, handy if your installing a car kit etc , power in seconds switched or unswitched.

I used those vampire taps and scotch taps and they were a pain in the arse and never really that reliable.

Just though i'd share the info.

jayok · 13-02-2008 10:13pm

Just to point out the obvious, but with this configuration, it means that to be correctly fused, the current should flow from the left terminal to right. Also you are potentially overloading the cable rating.

e.g. a 20A fuse, you could potentially draw upto 40A. Problem if cable isn't specced, cable melt, fire, brimstone, 4 horsemen, etc

eringobragh · 13-02-2008 10:16pm

Read the site

The Access-A-Fuse is two fuses in one! It has an original 20amp circuit plus a 7.5amp fused accessory connection

jayok · 13-02-2008 10:19pm

Which means the total current draw can be 27.5A through the single fuse. If the cable is specced for 20A you are exceeding specification by 37.5%. Most engineers will over spec a system but by how much will depend on the designer. So do you feel lucky?

eringobragh · 13-02-2008 11:08pm

i see well i changed the wipers one to this and no problems as of yet. The ideqa is the tap isself is fused at 7.5 while it still maintains the 20 from the original. Obviosuly you wont't be using it on something that draws lots of power / high amp

Oilrig · 13-02-2008 11:28pm

You're still potentially subjecting a 20A circuit to a 27.5A load... I for one wouldn't touch it.

Great sounding idea, but as with anything leccy - do it right.

Power tapping in car...made easy

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