Re: PTC protected dual battery harness

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

The 500 is awesome. I use the 100 for big residential and love it.
I wouldn't take over any panel I couldn't support...especially at 3am on a
Sunday night.



--
**Crash Gordon**






"Nomen Nescio" <nobody@xxxxxxxxx> wrote in message
news:16ecee27746d530b41fbfeacdef6cc28@xxxxxxxxxxxx
| >How much more "backup" does he need?  Most panels can handle recharging
| >up to a 14AH battery (2 7AH batteries in parallel will fit in most cans
| >if they're not "overloaded" with wire).
|
| Frank, when more than one battery is connected in parallel, the correct
way
| to do it is to use some sort of overload protection in the battery leads.
| Either a circuit breaker, a PTC device, or even a properly selected fuse.
| Suppose one battery develops an internal short:  the good battery will
| start trying to charge the shorted battery, and hazardous amounts of
| current can flow.
|
| A comment on the original poster's question:  I think it is monumentally
| stupid for someone to take over 35 DMP panels (DMP's biggest and most
| powerful panel, by the way) and not have a source for spare parts.  If he
| can't even come up with a battery harness, what's he going to do when he
| needs a keypad or a loop expander, or when one of those XR500 panels craps
| out on Friday night?
|