Hi everybody!
On a Multiplus 24/3000/70 with a 50A transfer switch, is “AC Out 2” really limited to 16A, or can it pass through all the 50A ?
Both the manual and the spec sheet say it’s limited to 16A, but this doesn’t make sense to me.
Say we have a large genset that can supply up to 50A, and several high loads that we only want to power when the genset is running. Why would only 16A be available on “AC Out 2”?
Any chance there is a mistake in the manual and spec sheet?
Thanks for the help!
That’s correct for the 230v model, yes; the 120v model is 32A maximum on AC-Out 2, which makes sense - half the voltage, double the current.
AC-Out 2 runs on a separate relay, to connect AC-In to AC-Out 2, so the main transfer switch rating does not equal the secondary relay rating. Not sure overall, but since I know that the cost of such relays increases dramatically with increased current-handling capability, I imagine sizing up the secondary relay would have given rise to a prohibitive cost increase for these units.
That’s still 3,680w passthrough capability for your loads on AC-Out 2, which for the majority of installations these go into would be quite adequate; if additional power is needed, it may behoove your systems installer to install a secondary panel for those inordinately large loads that is strictly powerd by the generator rather than running through the MultiPlus at all.
Understood, thanks a lot Justin!
I’ll have to remember not to turn on my water heater and my water maker at the same time.
Or think of a better solution, like supplying a contactor with “AC Out 1” and commanding it with “AC Out 2”…