Benefits from using a solenoid?

[MoOn-BaBy]

I've seen alot of heavy duty/continuous duty soleniods for sale on ebay. Is there any real benefit to using one for a hydrogen booster, and how do you wire it in?

Thanks!

[Lemontree]

what kind of benefit there can be found?

[TuxAir]

I think he is talking about solenoids like those used for starter circuits instead of the Bosch 30/40 Amp relays to send power to the booster. These are high amperage/continuous duty solenoids. I see no problem with them, but I do not see the need for them either. Possible benefit is heavier terminals to hook up to(nut/washer arrangement vs. heavy duty spade terminals.

[Lemontree]

also i bought some relays for ~1$ at used car parts store. there can be found even 70 amps relays. anyway, if you are using it in car, than this will be enough. if this will be used for home hho generator than there van be a lot more amps, but no need for that kind of power switch