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8.4.3 Connection from the Batteries to the DC Input Side of the Unit –
Cable and External Fuse Sizes
WARNING!
The input section of the inverter has large capacitors connected across the
input terminals. As soon as the DC input connection loop (Battery (+) terminal
►
External fuse
► Positive input terminal of the inverter ► Negative input terminal of
the inverter
► Battery (–) terminal) is completed, these capacitors will start charg-
ing and the unit will momentarily draw very heavy current that will produce
sparking on the last contact in the input loop even when the ON/OFF switch on
the inverter is in the OFF position. Ensure that the external fuse is inserted only
after all the connections in the loop have been completed so that the sparking
is limited to the fuse area.
MISE EN GARDE!
La section d'entrée de l'onduleur a des condensateurs de grande valeur
qui sont connectés aux bornes d'entrée. Tant que la boucle de connexion
d'entrée CC (la borne (+) de la batterie ► le fusible externe ► la borne
d'entrée positive de l'onduleur ► la borne d'entrée négative de l'onduleur ►
la borne (-) de la batterie) soit complet, les condensateurs commençeront à
recharger. L'appareil prendra un courant fort brièvement pour s'alimenter
qui va produire une étincelle sur le dernier contact du boucle d'entrée
même si l'interrupteur ON/OFF du l'onduleur est dans la position OFF
Assurez que le fusible externe est insèrer seulement après que toutes les
connexions sont faites dans le boucle pour que des étincelles se produisent
seulement à l'endroit du fusible.
The ow of electric current in a conductor is opposed by the resistance of the conductor.
The resistance of the conductor is directly proportional to the length of the conductor
and inversely proportional to its cross-section (thickness). The resistance in the conduc-
tor produces undesirable effects of voltage drop and heating. Thus, thicker and shorter
conductors are desirable.
The size (thickness / cross-section) of the conductors is designated by AWG (American
Wire Gauge). Please note that a smaller AWG # denotes a thicker size of the conductor
up to AWG #1. Wires thicker than AWG #1 are designated AWG 1/0, AWG 2/0, AWG 3/0
and so on. In this case, increasing AWG # denotes thicker wire. Conductors thicker than
AWG#4/0 are sized in MCM/ kcmil. Table 8.1 gives resistance of cable in Ohm (Ω) per ft at
25˚C for battery cable sizing.
SECTION 8 | Installation
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