#Should i wire amp to battery ground isolator serial#

You might also like to make a note of the model and serial number, and the processor number as these are all things you might need later and it’s a lot easier to write them down in the manual than it is to go and open up the unit again. (Image: Littelfuse) While simple general-purpose diodes are the most common battery isolator technology, primarily for cost reasons, they are also the least efficient and require large heatsinks. Anything more elaborate should be done using one of the computer interfaces available, such as VE Configure. General-purpose diode battery isolator for 12-36V DC negative ground systems. Should I wire my amp ground to my battery, or ground it to the frame does it matter which I do Quote ultimate157 Engineering Student 5,000+ posts 10+ year member 7,314 4 Worcester, ma 2 what size wire are you using If its 1/0 or 2 gauge I'd go to the battery. The most basic programming is done using the dipswitches and that requires the cover to be open. For most installations you will want to at least do some basic programming of this device. Are the bolts tight? Have you mixed up your incoming and outgoing AC connections? Are those screws tight? Have you connected all the optional extra devices? There are also a few things you might like to look at before you close the lid so I have annotated the photo below with some notes. Have you got the polarity right for the DC terminals? Reverse polarity on these is a fatal error that will destroy the unit. damage, which could occur due to a short circuit in the wiring. The next panel shows the main battery cable connections.īefore you put the panel back on you may want to check your work. Battery Isolators are designed for negative ground alternator systems with batteries. There is a +ive and -ive connection that goes to battery positive and negative. Installing a voltage sense wire is not required but it does give improved performance because the sensor reads the actual battery voltage and can compensate when charging for up to a one volt drop in the cables.

The V Sense wire can be connected to the battery to give a more accurate reading of the battery avoiding voltage drop in the battery main cables.

#Should i wire amp to battery ground isolator generator#

K1 and K2 terminals are relay contacts which are programmable and can be used, for example, to automatically start a generator.

The battery negatives must be common to each other. Cable ties, corrugated split tubing, heat shrink, electrical.

The trickle charger terminal can be used for charging an auxiliary battery such as a starting battery. A DC to DC charger installation will require circuit breakers or fuses at both batteries as well.

The Ground Relay terminal is used if you are installing an Autotransformer, see Autotransformer Instructions for further details.

We will discuss these when we get to the programming section in a future blog post, typical uses include remote control from the Battery Management System (BMS) of a Lithium Battery where they could be programmed as “allow to charge” and “allow to discharge”

The Aux1 and Aux2 are input terminals and are programmable.

The wires are labelled +ive for red and -ive for black. The sensor mounts on the battery negative terminal.

The first pair labelled T-Sense are for a temperature sensor.

I'd be very interested to know any other arguments for +ve or -ve isolators. Look at your battery installation and if it is at all possible to contact an opposite polarity connector or bus-bar with tools then I'd put the isolator on the side that isolates the potential hazard - like the car body example.

connected directly to the battery clamp) then IMO, on a boat it doesn't really matter if the isolator is on positive or negative. Generally it is best to use either a spare fuse from the block or connect it in parallel with the car stereo system. The only time you use a battery isolator is in motor. Battery isolators are hard on alternators because they have a voltage drop within the isolator and they are restrictive to current flow, so your alternator has to power that voltage drop and resistance. Obviously a plastic boat can't be 'earthed' in the same way, but often negative bus-bars or connections are left un-insulated - as is the engine - so the same convention is used.Īs long as there is nothing by-passing the isolator (e.g. Answer: In most cases you do not want to connect the batteries using a battery isolator. This means that any failure of insulation on positive wiring, or contact with metal tools to the body when working on positive wiring can easily cause a short - The isolator on negative ensures the body is isolated first to allow safe working on the vehicle positive circuit. that is, the body of the vehicle itself is connected to the negative terminal of the battery. Putting the isolator on the negative lead is a convention from vehicles where they are 'negative earthed'.