Rotary Switch For Digital Meter

[Culln5]

Hey guys,
I've been thinking of adding a 6 position rotary switch to my digital meter so that I could individually select the 4 pack batteries, the auxillary battery, and the pack batteries as a whole. Has anyone done this? What type of rotary switch do I need? Single pole? Two pole?

George

[Sergio]

You mean something like this:
http://www.ebay.com/itm/GOLF-CART-BA...item338241af10

It needs to be a 2 pole switch since you need to toggle both positive and negative inputs to the meter.
It seems like a lot of wires to me, and I wonder if those multi-pair cables are rated for the hash environment of the battery compartment.
A lot of people just use a SPDT switch for the positive side, assuming the negatives are common, to switch between voltage pack and auxiliary battery reading.

[Culln5]

Originally Posted by Sergio

You mean something like this:
http://www.ebay.com/itm/GOLF-CART-BA...item338241af10

It needs to be a 2 pole switch since you need to toggle both positive and negative inputs to the meter.
It seems like a lot of wires to me, and I wonder if those multi-pair cables are rated for the hash environment of the battery compartment.
A lot of people just use a SPDT switch for the positive side, assuming the negatives are common, to switch between voltage pack and auxiliary battery reading.

Yes something like that. But I'm not sure if those wires would handle the 48v side.

How would the SPDT work? The pack positive to one side of the switch, the axillary positive to the other side, and both negatives to the center?

George

[Sergio]

The wire gauge is fine as those digital meters drain less than 20 milliamps.
For the SPDT, You would wire the center position to the positive on the meter, and one side of the switch to the positive on the pack and the other side of the switch to the positive of the auxiliary battery.

You need to have the negative of the pack and the negative of the auxiliary battery connected together to the negative of the meter.

this is 3 way switch i use