This may be a stupid question.
If an inverter manual states it must be protected with a 40amp device, am I correct in thinking that this means the ampage should be the same 40amp rcd, and 40amp mcb?
I know it is I'm just having one of those dumb ass days.
I'm just thinking (over thinking), as a new consumer unit (breaker box) is almost always supplied with a 63amp rcd, for protection to all circuits. But how good can the rcd be if you use no where near that amount of amps? Is there a mathematical relationship between rcd and mcb where the rcd can be higher amps rating than the mcb?
If an inverter manual states it must be protected with a 40amp device, am I correct in thinking that this means the ampage should be the same 40amp rcd, and 40amp mcb?
I know it is I'm just having one of those dumb ass days.
I'm just thinking (over thinking), as a new consumer unit (breaker box) is almost always supplied with a 63amp rcd, for protection to all circuits. But how good can the rcd be if you use no where near that amount of amps? Is there a mathematical relationship between rcd and mcb where the rcd can be higher amps rating than the mcb?