Samlexpower Evolution EVO-2212 Owner's Manual page 51

SECTIOn 3 |
4) Column 5 indicates the Amp rating of EXTErNAL breaker that is required to be
installed in the Load Center / breaker Panel that is being fed from the AC output from
this unit. Amp rating of the breaker is based on the following considerations:
a) Not less than NEC Ampacity (Column 3) - refer to NEC-2014 (National Electrical
Code) - Section 215.3 regarding over-current protection of feeder Circuit
Conductors
b) Closest Standard Ampere rating of breaker has been used - refer to NEC-2014
(National Electrical Code) - Section 240.6(A) regarding Standard Ampere ratings
c) Where Standard breaker rating does not match the required NEC Ampacity at
Column 3, the next higher Standard Ampere rating of the breaker has been used
- refer to NEC-2014 (National Electrical Code) - Section 240.4(b) regarding over
current devices rated 800 Amps or less
d) Type of breaker: Standard circuit breaker for 120VAC Load Center /breaker Panel
3.10 gfci Protection for vehicle APPlicAtion
When this unit is installed in vehicles, ensure that Ground fault Circuit Interrupter(s) are installed
in the vehicle wiring system to protect all branch circuits. Details of tested and approved GfCI's are
given in Table 3.4.
3.11 grounDing to eArth or to other DeSignAteD grounD
Grounding means connecting (bonding) to Earth Ground or to the other designated Ground.
for example, in a motorhome / caravan, the metal frame of the motorhome / caravan is nor-
mally designated as the Negative DC ground / rV Ground. Similarly, all metal portions of boats
and marine craft are bonded together and called boat Ground.
Grounding is required for (i) protection against damage due to lightning strike and (ii) protec-
tion against electric shock due to "Ground fault". In case of EVO, "Ground fault" may occur
due to inadvertent contact between an energized ungrounded current carrying conductor
and exposed metal surface resulting in voltage getting fed to (i) the metal chassis of the EVO
or (ii) to the metal chassis of the devices connected to EVO or (iii) to the metal frame/ chassis
in an rV / motorhome / caravan. When this energized exposed surface is touched, the voltage
will drive current through the body to Earth Ground producing electric shock. When properly
grounded to Earth Ground (or frame / Chassis Ground in motorhome or caravan), the Leak-
age Current Protection Device (like rCD, GfCI etc.) or Over Current Protection Device (like
Circuit breaker or fuse) will trip and interrupt the circuit feeding power from the AC source
(EVO / Grid / Generator) or the DC source (12V / 24V battery). Proper grounding will ensure
that all exposed metal surfaces will have equal potential and will be bonded to (i) a single
common Earth Ground point i.e. the Ground rod / buried metallic water / gas pipe at the
premises or (ii) the frame / Chassis Ground in a motorhome / caravan.
• "Grounded Electrical Power Distribution"
• "Grounding System and Lightning / Ground Fault Protection"
Installation
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