240v Shorepower/Inverter Switch & RCD

[PaulRainbow]

I can fit either just an MCB or an MCB + RCD before the changeover switch, just for the battery charger, is there any advantage in an additional RCD.

I would just fit an MCB for this job.

You mentioned sockets and ring mains earlier, no need for a ring, a radial circuit is normal on a boat.

 

[Jokani]

I would just fit an MCB for this job.

You mentioned sockets and ring mains earlier, no need for a ring, a radial circuit is normal on a boat.

Does this look correct:

Thanks for the radial tip.

 

[PaulRainbow]

Does this look correct:

Thanks for the radial tip.

No.

If you run the shore power cable to the new panel that sorts most of the above out.

The earth from the shore power goes to the GA >> panel, rather than directly to the panel. This is also supposed to connect to the boats 12v neg/grounding circuit.

If you then connect another cable to the shore power terminals of the panel, to a RCD and then connect the charger to this RCD your charger can only work when on shore power. I imagine there are some regs somewhere that say you should use a RCD and MCB, i'm not sure i'd bother just for a charger. If i had other "heavy" loads that i did not want to use the inverter for i would fit a second consumer unit with RCD/MCBs for those circuits (charger, washing machine, immersion heater etc).

 

[Jokani]

No.

If you run the shore power cable to the new panel that sorts most of the above out.

The earth from the shore power goes to the GA >> panel, rather than directly to the panel. This is also supposed to connect to the boats 12v neg/grounding circuit.

If you then connect another cable to the shore power terminals of the panel, to a RCD and then connect the charger to this RCD your charger can only work when on shore power. I imagine there are some regs somewhere that say you should use a RCD and MCB, i'm not sure i'd bother just for a charger. If i had other "heavy" loads that i did not want to use the inverter for i would fit a second consumer unit with RCD/MCBs for those circuits (charger, washing machine, immersion heater etc).

Thanks Paul,

Is this better:

 

[PaulRainbow]

Thanks Paul,

Is this better:

That's how i would do it Gary.

With the caveat that some regs or other will no doubt say the charger circuit should have a RCD as well as the MCB

 

[Jokani]

That's how i would do it Gary.

With the caveat that some regs or other will no doubt say the charger circuit should have a RCD as well as the MCB

There is little price difference, I may just fit an RCD/MCB and have done with.

Thanks for your time Paul, appreciated!

 

[PaulRainbow]

There is little price difference, I may just fit an RCD/MCB and have done with.

Thanks for your time Paul, appreciated!

You're welcome.

If there isn't much price difference you may as well fit both. It'll keep Vic happy

 

[Alex_Blackwood]

You're welcome.

If there isn't much price difference you may as well fit both. It'll keep Vic happy

Why fit both. Use RCBO's instead. They combine the function of both MCB and RCD.

 

[PaulRainbow]

Why fit both. Use RCBO's instead. They combine the function of both MCB and RCD.

Good point, for Garys job it would be fine.

 

[colind3782]

Slight thread drift but does anyone have a source for a free download of the latest possible copy of ISO 13297? The copy I have is the second edition from 2000 but I can't justify the purchase price for the fourth edition as I won't use it much. Is there much difference between the editions?