Magnum Energy ME-300F User Manual
Page 2

ME-300F and ME-400F Instruction Sheet
© 2011 Magnum Energy, Inc.
Conductor Gauge
Current Capacity*
Recommended Fuse
#4/0 AWG/107.16 mm²
360
400**
#2/0 AWG/67.4 mm²
265
300**
* - Current capacity based on 75° C cable rating in free air @ 30° C (86° F).
** - The next larger standard size overcurrent device may be used if the
de-rated cable ampacity falls between the standard overcurrent devices
found in the NEC.
FUSE
CLASS
-T
300
AMP
7.00" (17.78 cm)
6.25" (15.87 cm)
1.32"
(3.35 cm)
2.00"
(5.08 cm)
#10 (x4)
3/8 – 16 bolt w/ Hex nut (x4)
Requires 9/16" wrench
Figure 1, Large Fuse Block Dimensions
WARNING: During installation, incorrect stacking of the
fuse block hardware can create a highly resistive connec-
tion that generates heat. DO NOT place anything (i.e.,
washers) between the fuse and either battery cable
lug as this can cause the fuse to overheat and blow open,
resulting in a partial melting of the fuse holder and cover.
Before stacking, refer to Figure 2.
Figure 2, Large Fuse Block Hardware Stacking
Mounting
Blocks
Battery
Cable Lugs
Hex Nuts
Fuse
Lock Washers
Table 1, Fuse Selection