gordonrsmith921@yahoo.com
Joined: 06 Oct 2009
Posts: 24
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 Posted: Thu Jul 15, 2010 6:39 am Post subject: Z Figure Inconsistencies |
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I think the following questions relate to the current string with the subject: “ANL current limiter location on rear battery Installations.”
I think that item number 1. below relates to Bob’s answer in the above string where he comments: “The e-bus alternate feed wire is
longer, smaller gage and capable of being fault-powered
from either end.”
And item number 2. below relates to an inconsistency with Bob’s answer in the above string where he comments: “Further, we don't want a fault on the
alternate feed path wire to open both the alternate and
normal feed paths. Hence NO protection in the normal path
and SHORT wires there too.”
RESEND – Originally sent on 21 June & 24 June when Bob N. was tied up with his monster garage sale.
I find some inconsistencies regarding E-Bus feeds and I can’t understand the physics that might drive the decision for these differences. Or are they just items that need to be updated in the future?
- The wire from the E-Bus Alternate Feed Switch (or relay) to the E-Bus:
In most cases this wire connects to the E-Bus directly at the bolt, with no protection between the E-Bus bolt and the other end. In two cases it is different. In Z10-8 it connects at the E-Bus through a fuse on the E-Bus. In Z13-8 it connects to the E-Bus bolt through a Fuselink at the bolt. It seems to me that this wire will likely be more than 6 inches (especially when coming from a panel mounted switch). It seems to me that this wire should be protected at the E-Bus when the E-Bus is hot from the Main Bus Feed and the E-Bus Alternate Feed is open. However, I don’t know which is the favored method (Fuse or Fuselink).
- The wire from the Main Bus to the E-Bus main feed Diode:
In all cases except one this wire comes directly from the Main Bus Bolt to the Diode, with no protection (in most cases it is marked to be less than 6 inches). In the Z19 figures, this wire comes from the Main Bus through a fuse on the Main Bus and then to the main feed Diode. Is this because it is assumed that this wire will likely be longer than 6 inches? If the E-Bus and Main Bus could be close to each other and the Diode could this wire be as in the other Z figures?
Gordon Smith
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